Most docs are for experienced people to get valuable, exhaustive, and correct information when they need to. Learning about the same concepts is a different paradigm and you'd be better off with an actual book/tutorial. My most use information repositories are MDN and the likes, Devdocs|Dash, and sometimes library code when the documentation is lacking. But when I'm unfamiliar with a language/platform, I seek a book or a guide to get familiar with it.

LLMs can't help you if you want to skip the learning|training phase. They will present you something that you can't judge because you lack the qualification to do so. You don't learn how to play piano by only listening to it, or painting by viewing pictures.