I got a paper route when I was 12 or something like that. When you are under 18 those things are nice cause you don't have to worry about taxes or something. I forget what, but my mom talked me out of getting another one when I was 19 for some extra money. But when yer young it generally provides enough money for your needs. Lifeguarding is another good one around your age (not that I quite know what age you are. I am guessing here, of course). Look into when classes are at the YMCA. I don't know any parents that would not pay for lifeguarding lessons cause then a) kid can earn money for themself and b) it's just a damn good thing to know.
On the pop front: don't get all addicted to it. That shit is almost as bad as cigarettes. Learn to love water. heh.
Hair: Sure! Fucking shave it all off! Such a liberating thing. Hell, I'm thinking of doing it again myself. It's kinda nice. Oh god, especially in summer. I just don't recommend doing it for another month or 2, depending on where you live. Heh.