well, it depends what you mean by group dance. if you mean a group of actual dancers, then yes. if you mean a school dance, then probably not unless everyone wants to do batmaens and pirouettes at a...
i don't know but you will find out
most of the moves are with the feet bassicly you just stand on your heel and then your toes that about it i guess :)
jazz is cool dance
because its groovy :D