If you'd like to start with a light, fun introduction, "Lists and Lists" is an old interactive fiction game from the illustrious Andrew Plotkin, in which a genie gives you puzzles to solve using Scheme.

It's a delightful introduction to Lisp-y thinking. You can play online, or download and play offline: https://ifdb.tads.org/viewgame?id=zj3ie12ewi1mrj1t