Foundations
Start here if you're new to AI. Build a solid mental model in a few hours.
Free AI library
1019 plain-English guides, structured learning paths, and an open library — built by an independent 501(c)(3) nonprofit so anyone can understand modern AI.
Start here
Each path is a sequence of guides you can read in order. Pick the one that matches what you want to do.
Start here if you're new to AI. Build a solid mental model in a few hours.
Learn how to actually use today's AI tools well — chat, write, create, code.
Understand the real-world impact of AI on jobs, privacy, safety, and society.
Topic tracks
Jump into the area you care about. Every track has multiple plain-English guides.
Full library
155 of 1019 guides shown. Filter by track or search above.
Repetition Penalty and Decoding Controls explained clearly for everyday readers.
Language AIALiBi Position Bias explained clearly for everyday readers.
Language AIMulti-Query Attention explained clearly for everyday readers.
Language AISentencePiece Tokenization explained clearly for everyday readers.
Language AIWordPiece Tokenization explained clearly for everyday readers.
Language AISentence-BERT Embeddings explained clearly for everyday readers.
Language AIT5 and Text-to-Text Transfer explained clearly for everyday readers.
Language AIDense Passage Retrieval explained clearly for everyday readers.
Language AIBM25 and Lexical Retrieval explained clearly for everyday readers.
Language AIHyDE Hypothetical Document Embeddings explained clearly for everyday readers.
Language AISpeculative Decoding Draft Models explained clearly for everyday readers.
Language AILookahead Decoding explained clearly for everyday readers.
We're a 501(c)(3) nonprofit. No ads, no paywall, no tracking. Just clear AI guides funded by readers who value an independent source.