Find a local RC club and visit the field. It is amazing that whenever a young kid shows up at the field and expresses an interest in the hobby and a limited budget, one of the old timers manages to scrounge up a trainer that's been gathering dust, and everybody seems to have spare field equipment that they don't use anymore.

At the very least, they will be happy to let you try out the buddy box.

Just please do not go out and spend your money on a cheap r/c plane. You can really burn through a lot of money and have nothing to show for it.