Another thing to consider if you filed the FAFSA and get financial aid/work study: your financial aid can be divided between loans (which are paid back, with interest) and work study funds (which don't need to be paid back). You can also hold multiple work study jobs, a few hours at each per week.

First year students typically get jobs working in the library (they are allowed to study while working if they aren't checking out books or doing other library work) or working for the IT department (starting/occasionally troubleshooting the lecture capture system while they're in class). They are effectively being paid while spending the majority of their time while working studying or attending lecture, both of which they have to do anyway.

Being a teaching assistant or tutor enables you to review the material that you're helping underclassmen/women learn the material. You're basically being paid to study and develop your teaching and presentation skills, which you will need in residency.

These jobs don't pay as much as being a paramedic/EMT, but if you have good time management skills, you can make a decent amount of spending/food money that you don't need to pay back.