Gainesville,FL has a low cost of living. Your campus job should take care of your living expenses. My expenses were around 400$ a month, including rent, cellphone, food, everything.
The following is just a rough estimate (per-month, assuming a simple lifestyle). There could be a variation of +/- 30%. You do the math:
- Rent: $180-250 (Assuming you share a room. If you want your own room, this might be anything from $400-600).
- Utilities (Electricity, Internet, etc): $50-100
- Mobile (optional): $30-45
- Food (including groceries): $100-200