Reading a Datasheet
Coming from software, the instinct when you meet a new chip is to look for "the docs" — one document, searchable, that tells you everything. That document does not exist, and looking for it is the reason people bounce off hardware. Silicon vendors ship a set of documents, deliberately separated, because they answer questions that different people ask at different times: the person choosing a part, the person laying out the board, the person writing the firmware, and the person whose product works on the bench but fails one unit in fifty. Each document is written for one of those people and is close to useless for the others.