Build the whole thing. Then make it good.

CS336 is the operating-systems course of language models: tokenizer, transformer, kernels, parallelism, scaling laws, data, evaluation and alignment, each built by hand. This map gives every lecture a deep-dive explainer written from the talk with timestamped links back into the video, the cleaned transcript on its own page, the slides or executable lecture, the assignment it feeds, and supporting materials that were checked before they were linked.