A 360-flip is the same thing as a 180-flip, except that you do a 360 Shove-It instead of a 180 one. You should learn the 360 shove-its before trying this move. It's pretty hard, but you have to be able to land the 180-flip perfectly. All you do is spin the board a little faster and jump a little higher. This is one of the more advanced moves, so once you get it, you can consider yourself really good.
5-0s are pretty hard. Before you even try to do them learn how to do a tail manual. After that just do everything like the 50-50, but land on the back truck so that the tail isn't touching the curb. When you're done sliding pivot off.
Hints: If your having problems landing the back truck on the curb, try stalling. Just stand next to the curb, pop an ollie, land the back truck on the curb, and pivot off. Do that a few times and you'll be able to do the real grind perfectly.

Trick contributed by: www.skateboarduk.com