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If you want to improve your programming skills, try comparing and contrasting similar code. In this in-depth guide, Evaristo walks you through five different versions of a Rock, Paper, Scissors game in JavaScript. You'll use System Block Diagrams to analyze each project,…

These days, applications can get pretty complex - and this can cause compatibility issues across OSs/environments. This is where Docker containers can help. In this guide, @Oluwato25390240 explains how Docker works & walks you through containerizing a Node.js app.…

When you're preparing for technical interviews, you should solidify your knowledge of algorithms & data structures. And many devs use LeetCode to help them practice and study. In this course, you'll work through the Neetcode 150 – the 150 most essential LeetCode problems – to…

When you and your team are just trying to finish a feature, maybe you make a quick fix and say - "we'll fix it later". But then you don't - and that quick fix starts causing issues & producing hard-to-find bugs. This is an example of technical debt in your code - and here,…

Web components are a set of standardized browser APIs that let you build custom, reusable HTML components. You can use them to create self-contained components that work across frameworks - or even without a framework. Here, Mark teaches you about custom elements and events,…

Generative AI systems can create content, like text or code, based on data they've been trained on. And in this 65-hour bootcamp, @andrewbrown (and many other instructors) teach you key GenAI concepts. You'll get hands-on experience with Python data libraries, learn about…

If you need to make small updates to your app - think bug fixes & UI tweaks - you may not want to do a full release. Instead, you can use a tool like Shorebird to make patches and deploy them almost instantly. In this guide, @atuohaa explains when to use this tool and how to…

Named Entity Recognition is a tool that helps you pick out important terms in text. It's helpful for extracting meaningful insights from large bodies of text, for example. In this tutorial, Manish teaches you how it works by building a news analyzer that uses a…

You may have learned a lot of algorithms in your programming journey - but have you thought about why they work the way they do? Well, that's what you'll learn in this course. It goes into the mathematical reasoning behind an algorithm's performance and covers Divide and…

For today's coding challenge, you'll get a string and need to determine if it fits within the allowed number of characters for a social media post. Find it on the freeCodeCamp mobile app.

Uploading large files to S3 using traditional single-request methods can be pretty challenging. Network interruptions can happen, wasting bandwidth and time, and it gets pretty unreliable as files get bigger. Here, Chisom teaches you how to upload large objects to S3 with AWS…

Most commercial voice assistants send your voice data to cloud servers before they respond. But if you build your own assistant with open source tools, you can run everything right on your phone. This gives you more privacy and control - and Surya walks you through the process…

You can build your own 3D games that run right in the browser - and this course teaches you how. You'll learn how to use Three.js and Blender to build an interactive 3D portfolio site. You'll also learn about modeling, object interactions, how to get the camera to follow the…

The field of Cryptography is all about securing both data and communication between systems. And in this course, you'll learn the basics like hashing, symmetric and asymmetric encryption, and more. By the end, you'll have built a fully-functioning Python-based command line…

freeCodeCamp's interactive Python curriculum is now 100% live. 🐍 We're also nearing completion of the Full Stack Development curriculum. We'll keep shipping modules as we finish them. Including the new exams and certifications.

Some websites load quickly while others leave you looking at a blank screen - even when your internet is fast. And this may be because of round-trip time - how long it takes your browser to send a request and get a response from the server. In this guide, @UnsafeBlock teaches…

This weekend learn Cryptography for beginners with this FREE 1-hour Python course 🐍. Here are this week's five freeCodeCamp resources that are worth your time: 1. Learn how cryptography works, and how developers use it to secure both data and communication. freeCodeCamp just…

Today's coding challenge is all about counting cards. Go see if you can solve it on the freeCodeCamp mobile app.

Event-driven architecture is a powerful way to build scalable, decoupled, and responsive systems. Instead of relying on direct calls between components, event-driven systems communicate using events. In this JavaScript-based handbook, Ger teaches you about the event model, the…

If you're building AI apps, you might be struggling with how to structure the logic and connect prompts, memory, tools, and APIs. Well, this is where open-source tools like LangChain and LangGraph can help you out. In this guide, Manish explains what each tool does and when…