This year you will take the ACT and/or the SAT, possibly be reevaluated for your disability, and visit universities and colleges.
Remember to set up accommodations for the ACT/SAT ahead of time. Colleges and universities have a minimum requirement score on these tests. If you don't meet the minimum requirement, take the test again. You are not penalized for taking the test more than once. Only your highest score will be considered by admissions offices.
Decide which institutions you will apply to. Have multiple options in case you are not accepted at your first choice. Look into the local community college. The first two years at a community college and a university are mostly general study courses, so they are very similar. If you complete an associate's degree at a community college and then transfer to a university to complete a bachelor's degree, you will graduate with two degrees.