Whether you’re just starting out in coding or you’ve been around for a while, one thing’s for sure: learning never stops in tech. The best part? You don’t need to rely only on expensive courses—GitHub itself is a treasure chest of free, high-quality resources built by developers for developers.
Over the years, I’ve stumbled across some gems that have completely changed the way I learn and practice coding. Instead of hoarding them, I thought I’d share this list with you. These repositories aren’t just code dumps—they’re practical, project-driven, and community-loved resources that can help you level up your skills.
Let’s dive in 👇
🔨 1. Build Your Own X
If you’ve ever wondered “How do I build my own compiler? Or maybe my own database? Or even my own operating system?” — this repo is your playground. It’s a curated list of tutorials where you literally build complex systems from scratch.
Why it’s awesome: You don’t just learn theory—you get to understand how things actually work under the hood.
📚 2. Project-Based Learning
Let’s be honest: tutorials are great, but the real growth happens when you build something. This repo gives you hundreds of project ideas across different programming languages.
Whether you want to build a game in Python, a REST API in Go, or a chatbot in JavaScript, this repo has you covered.
💼 3. Tech Interview Handbook
Preparing for coding interviews can feel overwhelming. Luckily, this repo puts everything in one place—DSA patterns, behavioral questions, system design prep, even resume tips.
It’s like having a mentor guiding you through FAANG-level interviews.
🌐 4. Public APIs
Looking for APIs to integrate into your project? This repo is a goldmine. From weather data to movie info to AI tools—there are thousands of free public APIs you can plug right into your applications.
Perfect for hackathons or side projects.
🧹 5. Clean Code JavaScript
Writing code is one thing. Writing clean, maintainable, and readable code is another. Inspired by Robert C. Martin’s Clean Code, this repo translates those timeless principles into JavaScript examples.
Every JS dev should read this at least once.
📖 6. DevDocs
Imagine all documentation you ever need in one super-fast, offline-friendly app. That’s DevDocs. Instead of googling every little thing, you can have docs for multiple languages and frameworks at your fingertips.
🏗 *7. System Design Primer
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👉 GitHub Repo
If you’re aiming for senior roles or preparing for system design interviews, this repo is priceless. It breaks down complex topics like load balancing, caching, sharding, and distributed systems with clear explanations and diagrams.
📕 8. Free Programming Books
Thousands of free programming books and tutorials—covering pretty much every language, framework, and topic you can imagine. No excuses, everything’s here.
📝 9. Awesome Cheatsheets
We all forget syntax sometimes. These cheatsheets make sure you don’t waste time googling the same command for the 100th time. Super handy for quick references.
✅ 10. Frontend Checklist
If you’re into frontend development, this repo is like your launch checklist. From SEO basics to accessibility rules to performance optimization—it ensures your web projects are production-ready.
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