New to Linux - Some beginner questions about Bazzite

Hey guys, so I installed Bazzite on my 2nd SSD last weekend and I've installed some games and searched through the OS to familiarize myself with it, but I still have a few questions about Bazzite and Linux in general that I'd like some help with! I've used Ubuntu and Linux mint in the past (2014ish) just to mess around with but...