Computer Science

A broad field hub for learning computing through university courses, books, references, lectures, practice and projects.

Start with a balanced set

• CS50x — Harvard University · course · free — broad introduction to computer science and programming.
• MIT OpenCourseWare — MIT · university archive · free — large collection of university course material.
• The Missing Semester — MIT · practical course · free — shell, editors, debugging, command-line tools and developer workflows.
• Crafting Interpreters — Robert Nystrom · open book/course project — build a programming language to understand interpreters.
• Exercism — independent · practice · free — exercises and mentoring across many languages.

Courses

Universities & institutions

• Harvard CS50 — Harvard University — computer science, programming and related CS courses.
• MIT OpenCourseWare — MIT — lecture notes, assignments, exams and course material.
• OpenLearn — The Open University — free courses across computing and many other subjects.
• Saylor Academy — Saylor Academy — open, self-paced courses.

Independent & project-based

• The Odin Project — nonprofit curriculum — project-based web development and programming.
• Full Stack Open — University of Helsinki — modern full-stack development.
• freeCodeCamp — freeCodeCamp — interactive programming and web-development practice.

Books & textbooks

• Open Data Structures — open textbook covering fundamental data structures.
• Crafting Interpreters — practical implementation of interpreters.
• Nand2Tetris — build a computer system from first principles.
• Structure and Interpretation of Computer Programs — classic material on abstraction and programming.

Websites & references

• MDN Web Docs — web platform documentation and guides.
• JavaScript.info — JavaScript tutorial and reference.
• roadmap.sh — roadmaps across software and technology.
• The Missing Semester — practical computing workflows and tools.

YouTube & lectures

• MIT OpenCourseWare — university lectures.
• freeCodeCamp.org — long-form programming courses.
• Computerphile — accessible explanations of computing concepts.
• Ben Eater — computer architecture and electronics by building systems.

Tools & practice

• Exercism — programming exercises across languages.
• Project Euler — mathematical programming problems.
• Compiler Explorer — inspect compiler output interactively.
• SQLBolt — interactive SQL lessons.
• Regex101 — test and understand regular expressions.

Useful collections

• MIT OpenCourseWare — university course archive.
• OpenLearn — broad free-course catalog.
• OpenStax — open textbooks and educational material.

Pairing ideas

Broad foundation

CS50x → MIT OpenCourseWare → The Missing Semester → Exercism.

Use CS50x for the broad foundation, MIT for depth, Missing Semester for working habits, and Exercism for repetition.

Learn by building

Nand2Tetris → Crafting Interpreters → Project Euler.

A build-heavy route through hardware, language implementation and algorithmic problem solving.

Already programming; deepen fundamentals

Open Data Structures → SICP → MIT OpenCourseWare.

Use the books as the persistent references and add full university courses where a subject needs lectures and assignments.

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