If I have 3 felonies for selling marijuana. I want to go back to school, what job can I get without being..?

discrimintated & eliminated since I have a background. Here's a bio of my situation. I left my ex of 5 years because he cheated & use to hit me. Now I have to financially take care of myself. I make $15hr doing Accounts Payable & Recievable.I have my own bartending services where I bartend twice a month doing weddings, birthdays etc. I have no kids. I live in a 3 bdrm apt w roomies paying $450 a mo in Huntington Beach Calif.Due to today's economy I still struggle. I have restless nights wondering what if..what if I stayed w my ex let him hit, cheat & live in a life full of deciet. Yet I would have a refrigirator full of food, got to be wined & dined, and most of all got to travel. Although he made money he used it as control. I look back & I have to stay strong and just better myself. But what field and what courses can I take if I do go back to school? I would hate to be in more debt, getting a school loan or grant, finish school, try to apply for a job and get discriminated for..