Lesson 01
Open the terminal where you are
The terminal is much less intimidating once you can leave whenever you want.
open .
The two-way door between Finder and the terminal. Typing open . in a terminal opens that folder in Finder; a Finder service does the reverse. Once this is easy you stop avoiding the terminal.
Do this now
Get from a deep Finder folder to a terminal in that folder, and back, in under five seconds.