I was looking for reviews on boots, ended up finding this awesomely out-of-date trick tip page.
Some of the tricks down at the bottom are the best.
http://www.abc-of-skiing.com/freestyle-skiing/freestyle-ski-tricks.asp
here are some good ones for lazy people.
180
Using twin-tip Skis, look to your left or right (whichever side you plan to rotate) as you take off. Bear in mind that you will land backwards. Spot your landing and keep your weight centered. Do not turn forward after you stomp at the landing.
Rail Slide
Jump to land on the rail. Glide smoothly and keep your weight centered on both feet in order to stay balanced. Turn your shoulders the way you want to exit.
Spread Eagle
Take off and once you get airborne, move or spread your arms and legs to the side, keeping your body upright. Proper timing is important in doing this Ski Trick. Open your legs only if you are in the air. Close your legs before you reach the landing.
Backflip
This Ski Trick is a backward somersault in the air. As you take off, shift your weight backwards by leaning back. This will make your spin.