// learn by building

Learn from first principles.

Notes and guides that rebuild each concept from how things actually work — with interactive simulators you can step through, not just read.

topics

Notes and guides, by topic.

How a computer actually works — CPU, memory, binary, and the layers between the hardware and your code.

How the web works under the hood — browsers, HTTP, DNS, and everything between typing a URL and seeing pixels.

How data is stored, structured, and protected — just enough database to build real projects now.

Who are you, and what may you do? Authentication, authorization, and safe habits — independent of any framework.

Two shelves, one path — the fundamentals built by hand in pure Python, then Django, the framework made of exactly those pieces.

The classic ideas underneath intelligent systems — search algorithms that explore possibilities, and rules that reason toward a goal — built by hand.

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