Get help with paying bills or free stuff.

I am a current green card holder not yet a U.S citizen, wanting to relocate and live in in the United States, Miami specifically. Planning to pursue a bachelor's degree. I am eligible for Student aid to help me pay for the cost of school, a major concern I have is living arrangements, as I will be making the move alone and no family in the state. Is there any kind of assistance that would be available to me, for finding a place to live, rent subsidy etc. I would greatly appreciate feedback on this matter, thanks.