I taught myself to play the Cello a while back. I bought myself
   a cheap Cello from eBay for $50 (yes, a big Cello) and practiced
   until made notes that sounded good at night when I got home from
   work. I saw one video on "ergonomics" - how to sit right, hold
   the b...ow, hold the instrument, move the arm, wiggle the
   fingers."