Agreed with @Ben McMahon .... impressive that you have 11k saved up first of all at that age. Buying a college rental could be a great idea, if your going to college that is, that's up for debate elsewhere on the BP forums. Look into getting an FHA loan, talk to a lender and see what you might be missing to qualify.. might need a little more income or more credit, a good lender will point you in the right direction if you couldn't immediately qualify that is.
If your not thinking the rental route, I have to say I personally received an excellent education buying and flipping my first property, did 80% of the work myself, watching youtube videos to learn how to tile along the way, etc. Even if you don't profit greatly or at all on your first flip, the experience will be priceless.
I'm not sure what the market is like where you are but I was able to buy my first flip for 38k, borrowed the purchase from a friends Dad and the 2 of us took on the project. Talk to some friends or family, might be a partner or lender out there to help in your immediate sphere. Always nice to jump into this world with a partner or friend with a similar mindset to help you through the problems and setbacks that inevitably come up.