I'm not trying to be rude. The other guys have that covered. But It sounds like your not really wanting to start a business. You just want to go out there and cut some grass for money.
my suggestion is to have your dad take out a loan for college, not Equipment. Then take some business classes. Knowing how to push a lawnmower isn't going to help you run a business. I have a friend that is one hell of a bartenter, but he wouldn't last 1 month owning his own bar.