>>92645001Saiyans naturally like to fight. It's in there DNA. They need the challenge (the full bloods anyway). They're aggressive, but we know that can be reigned in (either via the head bump or a strong willed woman in there life).
Clark would have no difficulty teaching him or subduing him, given Goku doesn't actually reach a threatening level until adulthood (by that time he should have his powers under control). He was only town level or so around the time of King Piccolo (but then again, Roshi was weaker than him and blew up the moon).
I'd assume he keeps his tail?
Figuring out how to fly will be the hardest for him, but he'd eventually figure it out. He'd likely figure out Ki as well, since that's natural to Saiyans (When they go beserk as a great ape they shot that blast out of there mouths).
Specific attacks though... might take him a while to create. Supposedly, he is a prodigy when it comes to Ki (at least he was back in dragonball). He'd probably be able to create his own version of the KaMeHaMeHa in less time than it took Roshi.
