Welcome to SR. Have you read the stickies at the top of this page? There is some really good information up there. It is a good place to start. You said that he hit you. This makes me concerned for your safety and the safety of your daughter. I am glad that he is at rehab right now and that you are currently safe. If you are in the US, you can call the domestic violence hotline at 1−800−799−SAFE (7233).
You mention that you work full-time and that you go to school. Both of these places probably have resources to help you. A lot of employers have counseling lines, and I think about all colleges offer some kind of counseling service. You could go in and talk to them and explain your situation.