What is with this aversion to reading? No wonder I see so many MCU beginners asking questions about things that they would've known from reading the datasheet...
It comes along with the Newbies Are Idiots mentality that I see from so many people, like the ones who think that the Ebers-Moll equation is a complicated mathematical monstrosity suitable only for use by "PHD physicists". It's ridiculous, condescending, and elitist ("don't you worry yourself with all the fussy little details, I, the Superior Engineer, shall handle all of that for you").
If you're going to use a part, read its manual. We all have to do it. An exception can be made for things with
truly huge manuals - things like FPGAs, microcontrollers don't typically count - if you're willing to dive into the manual when you encounter something. Most of those "500 pages" are large items like tables anyway, it's not exactly heavy reading. Nobody's saying you have to fully read every digit of a "baud rate control register vs. baud rate" table - until you need to use the baud rate generator, that is.
If you can't handle reading a document that is specifically designed to explain things to you, perhaps you'd be better off finding something else to do.