Yeah you can preview the moves, but it's cumbersome to go to the moves list, hit a different button to preview, back out of the menu, try the move yourself, and then reopen the menu, scroll down to Movelist, preview etc....
It'd be nice if you could just hit select or something to bring up the movelist. It's annoying to do the above method when the characters have 100+ moves. Really wish that it'd had that training mode feature. Oh well.
It's a good game I'm liking it a little more the more I learn. Unfortunately, like Chac said, learning alot of moves at once totally sucks.