Electric guitar...

I've been learning a lot about relative chords and chord progressions in different keys. For instance, if someone can't sing a song because it's out of their range, the song can be transcribed to a different key that suits them. That's why I mentioned signals studios.

Before the Internet I would buy tab books. I learned a lot of lead licks that way, not too many times an entire song, but bits and pieces till I got my own style of playing down.

Good luck with the skills. Try to pick up every day. Keeps me in check. I keep a guitar next to me on the couch. But I live alone so I don't have to worry about bothering anybody.