Holy moly! What a way to start into the hobby.
Welcome to the hobby.
The questions you ask require a lifetime to answer. Often times, the answers are debatable; however, that's part of the fun.
For example, you would think the question, 'how often should you clean a firearm is a straightforward question'. Nope. There's a thread right now about this very question, with the lazy people saying it's ok to never clean, the obsessive people saying to clean everytime after a session, and the millenials saying clean whenever. Haha.
Oh, and if you should ever cross over into the NFA world, remember...it's a silencer, not a suppressor.