Can't live with my family anymore?

I have been living in very abusive conditions for well over two years, and am beaten up by my brother most days,for the littlest things.He has aspergers and has been in a mental hospital before,which didn't help him very much. Last year I snapped and shut myself off from everything due to the violence and sank into a very bad depression, still haven't recovered and feel like i need to get out. I've been getting more and more hysterical and scared over the past few months and very angry. I don't really know what choices I have. I've been saving money and looking for a job, there are very few i'm qualified for, though i hope to be starting on a music course this september. I'm 17. happy for any advice.