Simple recipe to get you into college:
1) Get good grades, ideally 3.5 or better. If you're below 3.0, the situation is not hopeless; but it will be very difficult to get scholarships and pay for school.
2) Take the SAT, get as high a score as possible.
3) Apply for college. Apply as early as possible. You'll get first dibbs on whatever scholarships are available.
4) Apply for lots of scholarships outside of the University, as many as you can get your hands on.
If you are lucky, you might be able to have college completely paid for.