- Hub of Resources
- Data Structures & Algorithms (DSA)
- Problem Sets & Practice
- Courses & Languages
- Cyber Security
- Web Dev
- Computer Systems, OS, & Architecture
- Books, Documentation & Reference
- ML, AI, Deep Learning
- Recommended Repos
- Papers, Blogs, Articles & Latest Tech Stuff
- Misc
- Youtube Channels to Checkout
- DigitalOcean Tutorials: The Ocean of Courses Free + Paid Course Hub.
- Everything you ever need Everything you would EVER need.
- Awesome Curated lists of resources for almost any programming topic.
- Developer Roadmap Roadmaps for different tech careers and stacks with pointers to more underrated resources.
- Best Websites for Programmers Curated useful websites for developers.
- Visual Algo Like
- The Algorithms Data structures and algorithms implemented in many languages.
- Big-O Algorithm Complexity Cheat Sheet
- Data Structure Visualization (USFCA)
- Red Blob Games Learn Algorithms via examples from computer games.
- OpenDSA - Preface
- DSA on Python A DSA course by University of Helsinki
- CP-Algorithms Tag Index
- Clash of Code
- CSES Problem Set List Problem list by University of Helsinki.
- NeetCode Practice Top leetcode problems.
- USACO Guide Problems
- YouKn0wWho - Ultimate Topic List
- Javascript 33 Must Concepts
- Cisco Networking Academy
- Learn By Example Learn Python, Sql, R by examples.
- The Valley of Code by Flavio Copes Goated Lessons on Tools, Lanuages related to Web Applications & Networking.
- Sql Practise (zoo) SQL Reference & Practise.
- More SQL Reference
- Implementation of the Same Algo in different languages
- NAND2Tetris Web IDE
- CTF - Capture the flag (Encodings)
- The CTF Primer (Beginner Friendly)
- OverTheWire: Bandit Level 0
- Cyber Security Base 2025
- Learn Cryptography (Practical Course)
- Cryptography Challenges
- Web Security by Portswigger
- How to Secure Anything
Tools:
- dCode - Online Ciphers & Solvers
- Cryptii - Modular Conversion
- Boxentriq - Puzzle Tools
- CyberChef
- Practise CLI Commands (ssh, npm, docker etc.)
- Beginner Friendly Web Dev
- Odin Project Project Based Web Dev from Scratch.
- University of Helsinki: Full Stack Dev
- Interneting is Hard More HTML CSS
- System Design Primer Learn how to design scalable systems.
- Public APIs Free APIs for projects and experimentation.
- CodePen: A Sandbox for Html, CSS Specific Tools & Concepts
- CSS Anchoring
- CSS Cascading
- Next.js & React Open Source Projects
- REST API Designing Best Practices
- Process vs Thread
- How Does CPU Work? Learn how multiprocessing works, what system calls really are, how computers manage memory
- Virtual Memory Dialogue Based Learning on Memory in Depth
- How Servers Work?
- Bridge Networking From Scratch
-
Free Programming Books Massive collection of free books, courses, and cheat sheets.
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- LLMs From Scratch Build large language models step by step.
- ML From Scratch Core machine learning algorithms implemented manually.
- ML Visualized Machine Learning Course Visualization
- How to Learn ML Free - MLTut
- Pytorch
- Applied Data Science with Python - FreeCodeCamp
- Deep Learning by UvA
- Made With ML Practical guide to production ready ML systems.
- DL Project & Theory w/ Mahdid
- List of TUI Based Applications
- Awesome Selfhosted Open-source replacements & homelabbing.
- Tech Interview Handbook
- Awesome Research
- Free for Dev Free-tier services for developers.
- He Make Good Notes, worth checking
Projects
- https://github.com/practical-tutorials/project-based-learning
- Build Your Own X (not twitter) Step-by-step guides to recreate popular tools from scratch.
Papers We Love Important CS papers and reading guides.
Research Papers
- Google Scholar The "Google" of academic papers.
- Microsoft Academic
- Alternative: OpenAlex
- DOAJ (Directory of Open Access Journals)
- PubMed central hub for life sciences and biomedical topics.
- arXiv papers released before peer review, mainly in Math, CS, and Physics
Blogs & Competitions
- Devpost Hackathons Some Hackathons
- Engineering Blogs
- Robotics in Python
- Algebrica An ontological graph based minimal math archive
- Physics, Math, & Engineering Visualization
Computer Science
- https://www.youtube.com/@SebastianLague
- https://www.youtube.com/@benjdicken
- https://www.youtube.com/@ByteByteGo
- https://www.youtube.com/@visualkernel
- https://www.youtube.com/@ArtemKirsanov
- https://www.youtube.com/@Computerphile
AI ML
Software Engineering
- https://www.youtube.com/@ThePrimeTimeagen
- https://www.youtube.com/@BenVallack
- https://www.youtube.com/@sriniously
- https://www.youtube.com/@diegoarias-tech
- https://www.youtube.com/@ByteByteGo
Security
Mathematics
- 3b1b the OG
- https://www.youtube.com/@MichaelPennMath
- https://www.youtube.com/@numberphile
- https://www.youtube.com/@profrobbob
- https://www.youtube.com/@ProfessorLeonard
- https://www.youtube.com/@DrTrefor
Others