Talk to the counselor at the community college and at the university you will be attending later. They can advise you on what scholarships are available.
As to the specific courses you should be taking they too would be able to give you that information.
After talking to them you will have a better idea what you can be doing in your normal daily practice sessions. For starters do you read music now if not that will be a must. Then start your journey into music theory. I feel you can get started with this at home now IF you take it in steps. If you jump from one subject to another you will keep running into walls and going down dead end streets. As everything we do in music is based upon an understanding of the major scale and how it is developed I would recommend you go back and start over with this paper.
http://www.ibreathemusic.com/forums/...ad.php?t=11975 Then go to post 13, 14 and 15 at this site
http://www.jsguitarforum.com/forum/s...40#post1368040 for some charts you will find helpful.
Good luck.