
There's a new school that teaches Tai-chi, Motorcycle maintenance, and jazz improvisation, anywhere in the world, for free or paid, whichever happens to be your circumstance. So go out and learn or teach something, or both!
Luckily for my dissertation, it seems people would like to be more musical:

PS - in all of the subjects that I "teach", there are far more teachers than learners. Isn't that curious? Do we all just want to share knowledge, but not absorb anything? Hmmm....
PPS - see comments for a note from one of the founders of SoE!