If your library is on steam, then there's nothing to worry about! Works natively on Linux. If your library is on other platforms, I'd honestly think twice about switching full time. Dual booting might be a better option. My library is split amongst multiple platforms and I decided that it wasn't working well enough for me. Steam games will work great though!
Many distros are easy enough to install and navigate as a newbie. My go to for years now has been Linux Mint! It's based on Ubuntu which is based on Debian.