freeCodeCamp.org
@freeCodeCamp
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We're a community of millions of people who are building new skills and getting new jobs together. A 501(c)(3) public charity. Tweets by @abbeyrenn.
Joined August 2013
Harvard's CS50 is one of the most popular intro computer science courses in the world. And freeCodeCamp has published the entire 25-hour course on our YouTube channel. You'll learn everything from abstraction + algorithms to data structures + security.
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Google recently released a new certificate in Cybersecurity. You don't need any experience to begin, since it was designed for beginners. In this guide, @EamonnCottrell explains what the Cybersecurity Professional Certificate is & how to get started.
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John Cena now follows freeCodeCamp here on Twitter. 🏕️
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As a developer, you should know core system design concepts. This helps show potential employers that you can turn design requirements into production-ready code. This course covers app architecture, API design, caching, networking, databases, and more.
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CSS is one of the main tools you'll use in web development, with HTML & JavaScript. And in this course, you'll learn it by building 24 different projects. You'll recreate popular layouts from apps like GitHub & CodePen while practicing your CSS skills.
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DevOps has some of the highest paying jobs in the tech industry these days. And even if you're not working as a DevOps, knowing how it all works can help you as a developer, too. Get started with key DevOps engineering concepts in this beginner course.
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Over the last couple months, OpenAI's new ChatGPT tool has been making waves. It's an AI that can respond to basically any query & compose text. In this course, you'll learn how ChatGPT works and then build your own version using the OpenAI API + React.
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You can learn the basics of data analytics in just 30 days. How? Well, @davidbclinton created this intensive and interactive course for you. You'll learn how to install Python Jupyter Notebook, find data from public APIs, and visualize datasets.
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React Native helps you build mobile apps that work smoothly on both iOS and Android. And you can learn how to use it by building your own weather app with real-time data integration and a sleek UI. Find the free full-length course on the freeCodeCamp YouTube channel. 🏕️
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Harvard's CS50 is one of the most popular intro computer science courses in the world. And freeCodeCamp just published the entire 25-hour course on our YouTube channel. You'll learn everything from abstraction + algorithms to data structures + security.
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If you want to improve your Python skills, you should build some cool projects. And freeCodeCamp just published a beginner-friendly course that goes through 20 fun things to build. You'll create a dice rolling simulator, leap year checker, and more.
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When you're looking for a new book to read, getting suggestions from a friend can be helpful. Well, in this course, you'll build your very own book recommender. You'll use an LLM and Python to build the engine and learn about vector search, zero-shot classification, sentiment
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If you're prepping for developer job interviews, you'll need a good grasp of Data Structures and Algorithms. And this 48-hour course covers what you need to know. You'll learn about algorithm efficiency, key data structures, dynamic programming, & more.
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Harvard's CS50 is one of the most popular intro computer science courses in the world. And freeCodeCamp just published the whole 25-hour course on our YouTube channel. You'll learn everything from abstraction + algorithms to data structures + security.
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If you want to learn AWS Cloud, @andrewbrown created a 107-hour bootcamp for you. It'll help you level up your cloud computing skills by building lots of projects. You'll learn about containers, authentication, Postgres, caching, CI/CD, and much more.
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Django is a popular Python web framework you can use to build scalable & robust apps. And this course teaches you how to use it by building an online marketplace. Your app will have have features like authentication, a dashboard, and much more.
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The Go programming language is a great choice for coding the back end of your apps. And in this course, you'll build a React front end powered by a Go backend. You'll learn how to set up the project, build APIs, handle server-side logic, and lots more.
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If you're looking for a developer job, you should have a great portfolio site. This lets potential employers view your projects and skills laid out in an accessible way. In this course you'll create a portfolio website using HTML, CSS, & JavaScript.
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Happy 9th birthday to the freeCodeCamp Community! 🎉. Here's to many more years of creating free programming, math, & computer science courses for people around the globe. If you're not already donating to support our mission, we encourage you to start: .
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As a developer, you should know core system design concepts. This helps show potential employers that you can turn design requirements into production-ready code. This course covers app architecture, API design, caching, networking, databases, and more.
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When you're learning about AI & machine learning it's helpful to build things from scratch. And that's what you'll do in this course. You'll learn Neural Networks by manually adjusting the network parameters while building a self-driving car playground.
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Full stack engineers are in high demand - they code both the front & back end of applications. There are many skills you'll need to know to call yourself "full stack". In this career guide, Dionysia explains what it takes to be a full stack engineer.
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As a software developer, you should know how to work with databases. And if you need to learn the basics or brush up on your skills, this course is for you. It covers client & network layers, execution management, storage engines, indexing, & lots more.
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Linux is a popular operating system among SysAdmins & devs. And @beaucarnes created an in-depth beginner course for you. In it, he goes through the major distro families & gives you an in-depth overview of how to use Linux. Find the course on freeCodeCamp's YouTube channel.
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Power BI is a business analytics tool that can help you gain insights from your data. And when you use it with Python, a bigger world of exploratory data analysis opens up to you. In this tutorial, Yannawut shows you how to use Python in Power BI.
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Docker & Kubernetes are tools that can help you scale your applications. Docker lets you run apps in containers, and Kubernetes helps you manage those containers. In this hands-on course, you'll learn about microservices, containers, pods, & lots more.
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Many universities, companies, & organizations offer free online courses. But only some of them offer free certificates - and @dhawalhshah collected them for you here. In this guide, he groups these certs by organization so you can choose your next one.
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Pointers can be a daunting concept in C programming – but they're key to understanding the language. Essentially, they "point" to the location of data in memory. And this course teaches you how they work. Find it on freeCodeCamp's YouTube channel and get ready to grok pointers.
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Machine Learning and Artificial Intelligence are hot topics right now. And this course will give you a solid foundation in ML & AI skills. You'll learn key concepts like overfitting & regularization, common algorithms, & you'll build some projects, too.
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As a software developer, you should know how to work with databases. And if you need to learn the basics or brush up on your skills, this course is for you. It covers client & network layers, execution management, storage engines, indexing, & lots more.
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Kotlin is the most popular programming language used to build Android apps. And you can use it for any other kind of development, too. In this 14 hour course, you'll learn Kotlin starting from the basics & you'll build practical projects along the way.
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Being able to build front-end applications with HTML, CSS, JavaScript, and React is a great skill to have. And in this project-based course, you'll use these tools to build a Tic Tac Toe game and get some good practice. You can find the course on freeCodeCamp's YouTube channel.
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If you're learning to code and trying to get a developer job, you should read this book. In it, @ossia shares his tips for new coders. He discusses building your skills, network, and reputation as a dev, and includes stories from his own coding journey.
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Harvard's CS50 is one of the most popular introductory computer science courses online. And freeCodeCamp published the entire 25-hour course on our YouTube channel. You'll learn everything from abstraction + algorithms to data structures + security.
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As a dev, you probably use open source projects all the time. And you can give back to the community by contributing to your favorite repo. This Thursday 5pm EST, @eddiejaoude & @nhcarrigan discuss all things open source + Hacktoberfest – join us ⬇️.
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The Linux operating system powers the majority of the world's servers. So it's a great tool to know. And this course will teach you Linux basics. You'll learn how to manage & troubleshoot a wide range of systems & you'll practice the concepts with labs. Search freeCodeCamp News
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If you're a developer, knowing some basic math can help you a lot in your daily work. And freeCodeCamp is building a math curriculum to help you strengthen your skills. In this article, Ed introduces these interactive math courses (in open beta).
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If you want to learn C programming, why not go right to the source?. Yep – the classic book co-written by the creator of C himself. In this course, Dr. Chuck teaches you C by going through the chapters of Kernighan & Ritchie's book. Find it on freeCodeCamp's YouTube channel.
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Harvard's CS50 is one of the most popular intro to computer science courses out there. And freeCodeCamp published the entire 25-hour course on our YouTube channel. You'll learn everything from abstraction + algorithms to data structures + security.
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Google recently released a new certificate in Cybersecurity. You don't need prior experience to begin – it was designed for beginners. In this quick guide, @EamonnCottrell explains what the Cybersecurity Professional Certificate is & how to get started.
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If you want to get into Machine Learning, a solid foundation in Linear Algebra is key. It'll help you understand how deep learning models, optimization algorithms, & computer vision work under the hood. In this course, you'll learn about matrices & vectors, determinants &
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APIs provide a way for different applications & systems to communicate with each other. And in this popular course, you'll learn all about them. The course covers what APIs are & how to use them, and you'll get hands-on experience by writing your own.
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Want to practice your coding skills? Try building a Google Docs clone. In this course you'll use Flutter, Node, Express, and other fun tools to create the project. Your app will have authentication, state persistence, autosave, & more. Find it on freeCodeCamp's YouTube channel.
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Being able to build front-end applications with HTML, CSS, JavaScript, and React is a great skill to have. And in this project-based course, you'll use these tools to build a Tic Tac Toe game and get some good practice. You can find the course on freeCodeCamp's YouTube channel.
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If you're prepping for developer job interviews, you'll need a good grasp of Data Structures and Algorithms. And this 48-hour course covers what you need to know. You'll learn about algorithm efficiency, key data structures, dynamic programming, & more. Course on freeCodeCamp
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When you're writing code, you need to think about designing systems that are scalable and maintainable. And inefficient software design can lead to issues like scope creep, miscommunication, delays, and so on. In this guide, Soham teaches you Software Design basics along with
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Harvard's CS50 Intro to Computer Science course is one of the most popular in the world. And the new edition is here - and it's still free. Watch it on freeCodeCamp's YouTube channel & learn all about algorithms, data structures, security, & much more.
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APIs provide a way for different applications and systems to communicate with each other. And in this popular course, you'll learn how they work. The course covers what APIs are & how to use them, and you'll get hands-on experience by building your own.
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If you want to learn AWS Cloud, @andrewbrown created a 107-hour bootcamp for you. It'll help you level up your cloud computing skills by building lots of projects. You'll learn about containers, authentication, Postgres, caching, CI/CD, and lots more.
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Using a VPN lets you access your home network no matter where you are in the world. This has various benefits, like greater security - and @LifeofDanEL shows you how to set one up here. You'll use the open source Tailscale mesh VPN and host it on a Raspberry Pi. You'll even add
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Postman is a powerful tool for testing APIs – so you can make sure your new features don't break your existing code. And you'll learn all about debugging endpoints, automating the testing process, and more in this course. You can find it on the freeCodeCamp YouTube channel.
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freeCodeCamp recently published Harvard's CS50P – yep, an intro to Python course from David J. Malan. It teaches Python basics, how to write and use APIs, & you'll build an application using frameworks like Django and React. You can find it on freeCodeCamp's YouTube channel. 🏕️
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Google recently released a new certificate in Cybersecurity. You don't need any experience to begin – it was designed for beginners. In this overview, @EamonnCottrell explains what the Cybersecurity Professional Certificate is & how to get started.
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APIs help applications communicate and exchange and verify data. And in this in-depth guide, @KraneOliver explains how they work and their different types. You'll also learn about their different architectural styles like REST, SOAP, and GraphQL + how to choose the right
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When you're working with APIs, there are some basic best practices you should follow. And if you really want to learn how APIs work, build one yourself. In this guide Jean-Marc goes over each best practice as you build a REST API w/ JS, Node, & Express.
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The Go programming language is a great choice for coding the back end of your apps. And in this course, you'll build a React front end powered by a Go backend. You'll learn how to set up the project, build APIs, handle server-side logic, and lots more.
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If you're new to working with computers this course is for you. It teaches computer basics for true beginners. You'll learn about key computer parts, how to setup your machine & connect to the internet, how to secure it, & much more. Find it on freeCodeCamp's YouTube channel.
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If you're prepping for developer job interviews, you'll need a good grasp of Data Structures and Algorithms. And this 48-hour course covers what you need to know. You'll learn about algorithm efficiency, key data structures, dynamic programming, & more.
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If you want to get into data science or machine learning, you should know Linear Algebra. And this beginner-friendly course will give you a solid foundation. Tatev covers key prerequisites, then dives into vectors, linear systems, matrices, and more.
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If you're looking for a fun project to help you practice your coding skills, this course is for you. You'll use Next.js, Tailwind CSS, & MongoDB to build a ticketing app. Your app will be able to assign and track issues, enable collaboration, and more.
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DevOps has some of the highest paying jobs in the tech industry right now. And even if you're not working as a DevOps, knowing how it works can help you as a developer. Get started with key DevOps engineering concepts in this beginner course.
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If you want to learn how to build & deploy ML models, this course is for you. It covers Exploratory Data Analysis, Feature Engineering, Model Validation, & MLOps integration. By the end you'll be able to manage complex data projects & deploy your models.
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If you want to learn how to build & deploy ML models this course is for you. It covers Exploratory Data Analysis, Feature Engineering, Model Validation, & MLOps integration. By the end you'll be able to manage complex data projects & deploy your models.
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As a developer, you'll need to know the basics of Git + version control. And taking your skills to the next level will help you work smarter and get more done. In this Git for professionals course you'll learn more advanced version control concepts.
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Many Machine Learning tutorials rely on using frameworks that obscure what's really going on under the hood. Well, not this course: its "no black box" approach lets you see exactly how things work. You'll learn ML & neural networks with no frameworks.
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If you're prepping for developer job interviews, you'll need a solid grasp of Data Structures & Algorithms. And this 48-hour course covers what you need to know. You'll learn about algorithm efficiency, key data structures, dynamic programming, & more.
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If you want to practice coding a full-stack app, this course is for you. You'll use Next.js & its app router, Tailwind CSS, Open AI's API + other popular tools. By the end you'll have an AI-powered email SaaS with Stripe integration, deployed on Vercel.
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These days, it seems like everyone's making a Twitter clone. Well, now you can too with the help of this in-depth, project-based course. You'll learn full stack development with Next.js and Supabase along the way as you build your app. Find it on freeCodeCamp's YouTube channel.
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GitHub has a GitHub Actions certification exam. And if you're a developer, DevOps, or automation lover, this course can help you study. In it, @andrewbrown covers runners and commands, advanced workflows, publishing and deployment, and lots more.
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Building projects is a great way to practice your web development skills. And creating something useful, like a recipe website, is extra satisfying. In this course you'll build a multi-page website w/ just HTML + CSS – no frameworks needed.
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HTTP is the foundation of data communication on the Web. It transfers data from the client to the server and vice versa. You'll need to know how it works as a web dev - and this project-based networking course teaches you all the basics.
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Want to level up your Java skills + build a full-stack app? Check out this course. @frhnhsin & Gavin designed it as an intro to full stack development. You'll use Java, MongoDB, React, & other tools to build a movie review site. Find it on freeCodeCamp's YouTube channel.
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C++ has been a popular programming language for 30+ years - now that's some impressive staying power. If you want to learn it, you're in luck – freeCodeCamp published a 31-hour C++ course. You'll start from the beginning & learn all the key concepts.
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Coding a complex website from scratch is a good way to learn new skills. In this course, you'll use tools like Next.js, Tailwind CSS, Stripe, & React to build a full-stack app. You'll learn about authentication, search, payment integration, and more.
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AI Engineers design, build, and deploy AI models and systems to solve complex real-world problems. And if you want to get into the field, this handbook is for you. In it, @tatevkaren7 discusses must-have skills, shares tips for getting started, and goes through use cases for
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Spreadsheets are a powerful tool that you should know how to use as a dev. And this course from a data scientist and university prof teaches you how to use Google Sheets like a pro. It covers preparing data, creating charts, leveraging formulas & more.
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It's easier than ever to launch your own Software as a Service (SaaS) company. The hardest part is getting people interested in it. In this course, you'll learn how to build an app that lets people chat with any PDF, set up monetization, and more.
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Want to level up your Java skills + build a full-stack app? Here's a fun course for you. @frhnhsin & Gavin designed it as an intro to full stack development. You'll use Java, MongoDB, React, & other tools to build a movie review site. Find it on freeCodeCamp's YouTube channel.
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As you improve your coding skills, you'll want to learn how to write Clean Code. This means writing code that's readable, clear, and well-organized - and that anyone can understand. In this quick guide, Nitin shares some simple tips to help you write cleaner, more maintainable
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If you're a dev, you should have some solid math skills. Lucky for you, @manocormen just put together this list of a bunch of free online math courses from the world's top schools. You'll find 120 of them here so you can start leveling up your skills.
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Large Language Models like GPT-4 and Claude are very expensive to train. But a Chinese company just successfully trained a new model for a fraction of the cost. In this course, @andrewbrown teaches you how to use DeepSeek-R1 and run it on your own machine.
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If you want to expand your knowledge of web development, this course is for you. It picks up where Harvard's CS50x leaves off and dives more deeply into Python & JavaScript for the web. You'll also learn HTML, CSS, Git, SQL, Testing basics, & much more.
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If you want to learn how to build & deploy ML models this course is for you. It covers Exploratory Data Analysis, Feature Engineering, Model Validation, & MLOps integration. By the end you'll be able to manage complex data projects & deploy your models.
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A computer's operating system manages hardware & software and provides key services for various programs. And in this course, you'll learn all about how an OS works. It covers types of OSs, process management, CPU scheduling, memory management, & more.
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The FARM stack combines 3 powerful tools for building modern web apps: FastAPI, React, and MongoDB. In this course, @beaucarnes teaches you how to use them to build a TODO app. You'll learn about the stack, then use NGINX & Docker to deploy your app. Search freeCodeCamp News or
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When you're working with APIs, there are some best practices you should follow. And if you really want to learn how APIs work, why not build one yourself?. Here, Jean-Marc goes over each best practice as you build a REST API w/ JS, Node, & Express.
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Django is a popular Python web framework you can use to build scalable & robust apps. And this course teaches you how to use it by building an online marketplace. It has features like authentication, a dashboard, and much more – find it on freeCodeCamp's YouTube channel.
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There are many ways ChatGPT can help you be more productive & save time. And you can start by installing its extension in VS Code. In this guide, @ijaydimples walks you through installing CodeGPT in VSCode so you can use its features right in your IDE.
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The Go programming language is a great choice for coding the back end of your apps. And in this course, you'll build a React front end powered by a Go backend. You'll learn how to set up the project, build APIs, handle server-side logic, and lots more. Course on freeCodeCamp
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Learning how to work with AI in the cloud is an important skill for devs these days. And in this 23 hour course, @andrewbrown teaches you all the fundamentals of Generative AI. You'll learn about LLMs, AI assistants, prompt engineering, development tools, RAG, and more.
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You can learn the basics of data analytics in just about 30 days. And this is possible because @davidbclinton created this intensive course for you. You'll learn how to install Python Jupyter Notebook, find data from public APIs, and visualize datasets.
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926
Linux is a popular operating system among SysAdmins & devs. And @beaucarnes created an in-depth beginner course for you. In it, he goes through the major distro families and gives you an in-depth overview of how to use Linux. Find the course on freeCodeCamp's YouTube channel.
12
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910
Sometimes, your daily routine won't go as planned. But that's ok - take a break, take a walk, and recalibrate. You'll get back in the groove. (Photo by @millywebdeveloper on IG)
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If you're learning front-end development, here's a fun course for you. In it, @thecodercoder shows you how to build a basic website with HTML, CSS, & JS. You'll make your own social media dashboard with a light/dark theme toggle. Find it on freeCodeCamp's YouTube channel.
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Postman is a powerful tool you can use to test your APIs. It helps you make sure any new features you add don't break your existing code. And you'll learn all about debugging endpoints, automating the testing process, and more in this course.
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If you want to learn AWS Cloud, @andrewbrown created a 107-hour bootcamp for you. It'll help you level up your cloud computing skills by building lots of projects. You'll learn about containers, authentication, Postgres, caching, CI/CD, and lots more.
2
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The Django REST framework is a powerful and flexible tool for building web APIs. It has helpful features like serialization, auth, and throttling, and lets you make changes easily. This course walks you through how to use it to build your own web API.
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System design addresses how different parts of a system communicate, manage data, & handle requests. And this course teaches you the key concepts by building a YouTube clone. Along the way you'll incorporate 3 key services: upload, watch, & transcoder. Search freeCodeCamp News or
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If you're prepping for developer job interviews, you'll need a good grasp of Data Structures and Algorithms. And this 48-hour course covers what you need to know. You'll learn about algorithm efficiency, key data structures, dynamic programming, & more.
6
209
915
If you want to learn C programming, why not go straight to the source?. That's right – the classic book co-written by the creator of C himself. Dr. Chuck teaches you C by going through each chapter of Kernighan & Ritchie's book. Find the course on freeCodeCamp's YouTube channel.
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