a learning-in-public project · open to all
Interactive, single-file field guides that build a hard topic from the ground up: intuition first, then the real math, then code you can run in the browser. These are my own learning and review notes. I'm sharing them openly, and contributions are welcome. They continue The Useful Series (2021), my earlier experiments in open-source knowledge.
I learn a topic properly by rebuilding it from scratch and writing it down. These guides are that process, cleaned up. My background is a Computer Science and Economics dual major; I TA'd Money & Banking and was a supervised teacher for Macroeconomic Theory, so the economics guides go as deep as the technical ones.
Each is a single self-contained index.html: interactive diagrams, live demos, real math, and runnable code. No framework, no bundler, no server.
Read top to bottom for a first pass, or jump to any section to review. Found a bug, a clearer explanation, or a whole new topic? Open a PR. Details below.
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These are living documents. Corrections, clearer explanations, new interactive demos, and entirely new 0 → Hero guides are all welcome. Everything is plain static HTML, so the barrier is low.
Fix or improve any guide directly in its index.html. No toolchain to install.
Drop a your-topic/index.html folder, then add one entry to the GUIDES array in this file.
Send it over. Keep the house style: intuition → math → runnable code, single file.