A working library — not a link dump. Every entry here is something worth your time: free where free exists and is genuinely good, paid where the depth justifies it. Organized by what you're actually trying to learn.
The single best on-ramp into computer science. Covers abstraction, algorithms, data structures, and security across C, Python, SQL, and JavaScript, with real problem sets.
MIT's legendary text on computational thinking — builds interpreters, evaluators, and abstraction layers from first principles in Scheme.
A curated, opinionated CS degree curriculum built from the best free/paid textbooks and courses across nine core subjects.
189 programming questions with worked solutions and a framework for approaching unfamiliar problems under pressure.
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