I switched to bass from drums after getting injured wrists playing high school volleyball. Got the local multi instrumentalist teacher to show me the basics of bass and then I left him after a few months and went to a specialist bass teacher. Ironically, my first lesson with him was the week that Jaco died and he opened my eyes up to Jaco, Mark King, Stanley Clarke, Flea etc. The rest of the time I was just jamming with other musicians, I've never really had specialist lessons since then - it probably shows! lol