I Was Self-taught
My brother wanted to play violin when he was 15, so my uncle bought him one for his birthday. He practiced for about a month then decided he was over it.
So he gave it to me. I watched a couple of "how-to" videos and taught myself a few tings, and ended up teaching myself how to play Mary Had A Little Lamb. I gave an impromtu recital for my dad and brother, and when my brother laughed his head off, I put the violin away and never picked it up again. lol
Now though, I'm over the ridicule, and I really want to learn by a pro how to play a violin.