I'm pretty much self-taugh, never been in an art class - other than school's, I mean. But I don't think I've learned a lot from school. My mom is fantastic with anything creative (cooking, baking, drawing, painting, crafting - she's pretty good with doing houses too with Sims!), so I usually ask her opinion for anything I've done. Plus I have a friend who has been in art classes and who has studied quite a lot about anatomy etc. So it's good to ask help and critic from them.
I usually look tutorials. I don't use them, like watch-and-try-to-copy, but I see them and hopefully I rember something from them when I next time try to draw. I don't like watching youTube videos, simply because my computer hates me and watching them is a pain. ^_^