Start off on small kickers. Get a feel for straight airs. Work your way into old school tricks like spread eagle's, twisters, ect. Once you really get comfortable in the air, you can try a 180. To do a 180, pop of the jump and set the spin with your shoulders. Work your way towards t setting the 180's, meaning have your arms perpendicular to you body during the spin. Once your really get a feel for 180's, go for 360's. To do a 360, pop off the jump and set like 180 but pull in your arms in to speed up the rotation. slowly work on setting harder and t setting. Once you can do 360's fairly well, try to hit bigger jumps. Work through the previous progression of tricks again. Once you feel like you can do a t set 360 on this jump, work towards some grabs. A good grab to start with is a safety grab. A safety grab is when you grab the outside of your ski directly under you boot with the hand that is on the same side as that ski. Begin by pulling your knee's up slightly while spinning. Work towards getting your knees all the way up to your hands. Eventually you will be able to grab safety without having to reach at all. Remember that with most grabs, it is easiest to grab with your right hand if you spin to the left, and your left hand if you spin to the right. Another fairly easy grab to learn is japan. A japan grab is when your grab the inside of your ski under or slightly behind your boot, with the hand on the oposite side as that ski. To learn japan, you should also learn how to pull your knees up while spinning. Once you can spin a 360 with your knees pulled up, begin to try to reach for the iside of the oposite side ski. This is a very basic, japan grab. Once you get comfortable doing this, you can start to tweak it more. There are many other grabs that you can do. For a guide on grabs, go to
https://www.newschoolers.com/ns/cult/forumthread/thread_id/349994/.
I hope this helped
