Emacs

A .. pretty nice environment to do all of your “generally working with text” stuff in.

Also relatively arcane, complex, and hard to tame.

My recommendation to start using it is definitely Doom Emacs (which makes things a lot easier in my experience).

You should not, in any way, start using it before having a proper habit of version controlling your config files. (Psst: The easiest way to do that is magit (running inside Emacs))