Kul,
Look on e-bay for an airplane. Sometimes you can find one very cheap. Just ask a bunch of questions from the Seller before sending any $$$$$$$. If not there then save up like the other Guy's have said and use your lunch money and Thursday night beer money in a piggy bank and pretty soon you will have enough to buy a $300.00 plane, engine, radio and some gear. You will also get skinny and save brain cells!!!
Good luck and welcome aboard the addictive wagon,
Gibbs