Learning & Reference

A curated GitHub list of explorable explanations, a rabbit hole of interactive learning in itself.

Peer-reviewed, continuously updated philosophy encyclopedia written by working academics, and genuinely readable.

Free, open source reference manager that collects citations from your browser and formats bibliographies.

Academic search across 200 million papers with citation context and free PDF links where available.

The complete Caltech lectures, free and fully readable online, still the best physics prose ever written.

An interactive step-by-step guide and visual flowchart detailing the skills, tools, and technologies required to become a modern frontend developer.

A hub collecting interactive "learn by playing" articles on everything from epidemiology to segregation models.

Short visual explanations of statistics and math concepts like eigenvectors, Markov chains and conditional probability.

A free, refereed philosophy reference that often explains concepts more gently than Stanford's entries.

A dictionary that shows real usage examples pulled from books and the web alongside definitions.

Builds a visual graph of papers related to one you already have, great for mapping an unfamiliar field.