Learn to ride switch and practice all four 180s. In addition, don't cut across the landings of jumps and jibs or sit in the way after falling, unless you're actually hurt and incapable of moving.
This. It's actually a good idea to learn this stuff first and then hit the park. I mean you can go straight to the park as long as you respect other riders and don't cut in front of other people hitting obstacles. There are way too many (mostly young) riders who don't give a fuck about other people trying to ride in the park. And you can easily learn the basics in the groomers, after that you'll be more confident to ride in the park