Welcome to the site.
Being as your truck is coil sprung and 2wd, you have a few lift options:
-coil spacers (2")
-lift coils (2")
-lift spindles (3-4")
-body lift (3").
All of those are fairly easy to install, and can be done in the driveway with mostly basic tools.
As far as how high you should go, that's up to you. Rangers can't exactly be "jacked sky high" very easily, but a more aggressive stance and being able to see eye-to-eye with the full size guys is totally doable.
Here's my truck lifted 4" on 33s. (It's 4wd, so it sat ~2 taller to begin with)