Beginner and Need a Starter Bike!

[Vershay]

Hey everyone! I've been wanting to get a motorcycle ever since I put a snow blower engine on a mini bike frame in high school! I'm going into my Junior year of college and looking for a starter bike! I'm working in Cincinnati this summer, go to school in Terre Haute, IN and visit home that is a little South from Chicago. Anyone have bikes for sale close to hear? I guess I have a million questions and don't know where to start so I guess I'll bullet some thoughts down and I appreciated all the help I can get!

-Gas millage on GZ250?
-Easy modifications for beginners?
-Insurance suggestions?
-Best place to get a bike trailer or hitch?
-Things also need besides helmet and jacket?
-Classes I should go to?
-Can practice driving without a proper license?