Manga is a broad medium. I would either scroll around and see what you like and drop it if it's not good or ask for suggestions with some aspects you want. There's lots of trash but when you find some good ones, it's a great feeling.
Proton is a tool for use with the Steam client which allows games which are exclusive to Windows to run on the Linux operating system. It uses Wine to facilitate this.
No just in general. Yea I know this is a dead community