Originally Answered: Where can you park if you can't park on campus as a freshmen in college?
Some colleges do let you bring your car to campus as a freshman, if you live on campus. Many will not, but some will. One option is to find those that will. Just note that often, student parking, especially for freshmen, isn't near your dorm. You may have to walk or bus a distance to get there. So just because you're parking on campus, that doesn't mean that the parking situation will be convenient for you.
If you don't plan to live on campus, then you are a commuter student, and every college that I know of that has parking will let you park there. The parking restrictions are normally just for students who live on campus. So another option is to commute from home - to find a college within an easy commute from your parents' house, and to live at home. Most colleges that offer dorms require freshmen to live on campus, unless your family live within a few miles of the campus, and you plan to live there - so if you go for this option, pick schools that are really close to home.
Some colleges are commuter colleges, or offer very little on campus housing space. Schools like this often don't require freshmen to live on campus, since they have no or little dorm space. So another option is to look for commuter schools, and to either commute from home or else rent an apartment off campus.
Another option is to find colleges in areas where getting from place to place via public transit is really easy. Examples include Boston, New York City, San Francisco, and the region around UMass Amherst in Massachusetts. I'm sure there are more areas as well. But in regions like this, having a car is a problem, because parking is hard to find and expensive; and the public transit systems are really good, so you can pretty much get where you need to go on the train.
In an area like those I mentioned, it's really likely that your job could be close to campus, since these are places that have good retail environments.
If you *must* go to this one specific school that you appear to be thinking of, and they don't let you park on campus, then you're going to have to rent yourself an off-campus space; if you can find one available. In cities, there are often parking garages. In areas outside of cities, you'd need to find a homeowner who'd rent you a spot, which often isn't easy to find. The parking garage may or may not be anywhere near your campus - you may have to walk or bus some distance to get there. It depends on the area. The parking garage may be quite expensive, so you'll need to be prepared for that.
And that's the thing - you really need to run the numbers on this choice. Will it actually cost you *more* to keep your car (gas, maintenance, parking, insurance, etc.), or would it actually save you money to get rid of your car and get to your job via public transport, or would it actually save you even more money to not work at this job at all, but to try to find one closer to your school. Even on campus. Maybe even start your own haircutting business for fellow college students. You've got to run the numbers.
ETA: You mentioned that you work 12 hours per week while in HS. College demands more of your time than HS does. In HS, you do a good chunk of your work in class. In college, almost all of your work is done outside of class. You may find that college classes, plus 25 hours per week of work, plus commuting time is too much. Remember that your priority is your classes, not your paid work. You're in college for a reason - for a better future, right? College is your full time job. If your work makes your grades go down, then you need to cut back on the work.