You questions are pretty vague, but if you poke around the forum some more I think you'll find the answers you're looking for. I haven't been out of school that long, but the way I've managed to do it so far is
1) luck
2) make people like and want to hire you
3) save up some cash for when you don't have any
4) never stop looking for work. If you have a show, look for your next show.
As for taxes I'm just taking them to someone who went to school to learn how to do them. I'm way too slammed to try and master freelance taxes right now.