for your son id recomend a piper cub as well. here is how my dad tought me. you can get 2 radios and a cord that will connect both of them( a trainer cord). then the trainer takes the plane off, gets it all trimmed out and perfect to fly. get up high and make sure he doesnt go over the field. you can press a button that lets him take the stick. now when he starts getting out of control release the button and now you have the stick. (kinda like a drivers ed car if you will) tell him to fly in pylons and fly smooth. at half throttle. do this everytime you go out to fly and eventually he will get the hang of it.
a piper cub is great because its very slow and easy to fly. plus it flys great i have one. if you dont fly id recomend a trainer to help you son learn.
my dad tought me on a astrohog that we built together, damn i miss that bird. i crashed it after a bee bit me

dont get a electric plane. they are boring and nothing like gas planes. all though electric are WAY cheaper. they just dont do anything. 10 is a prefect age to learn tho.