Mine - Its not that great but whatever - I taught myself a language through song translation.
I was heavily into German Rock music while I was in highschool, and I would translate the non-English songs for fun, with google. By graduation, I was almost able to speak the language. Not fluently, but I got by from the people I knew who actively spoke the language.
Its been 6 years and Im not even interested in the music anymore, maybe from constant repetition of the same 4 albums over and over.
Anyway, Whats yours?
Tought myself how to properly mill aluminum with my first AR lower....gained confidence and each time I squeeze that trigger or watch the wife do it gives me a little more of that warm fuzzy to know that if I am not around she can and will protect herself.