Several years ago, my husband decided he wanted to learn to play the ukelele, and he taught himself to over the course of several weeks. It was fun to listen to him doing it; he picked it up pretty quickly, I thought, especially considering he had only one or two actual lessons and then just did the rest with a book.
I’m pretty sure he could, with only rudimentary instruction and an encyclopedia (or YouTube at least), teach himself to build a fully functioning house.
Anyway, about the time of the short-lived ukelele hobby, he introduced me to the music of James Hill. This video is amazing, probably one of my favorites ever.