This fastapi tut playlist is more comprehensive, deploying to AWS Lambda and JWT authentication and stuff. Fast API tutorials
Karpathy playing with tokens: "To help explain the weirdness of LLM Tokenization I thought it could be amusing to translate every token to a unique emoji. This is a lot closer to truth – each token is basically its own little hieroglyph and the LLM has to learn (from scratch) what it all means based on training data statistics. So have some empathy the next time you ask an LLM how many letters ‘r’ there are in the word ‘strawberry’, because your question looks like this: