Flat land jumps. On mellow and slower parts of a run, start practicing flat jumps. When you get good at these, you can start to do Ollies and Nollies. Then you can progress to natural features. Hit the small bumps throughout the runs and get some air. Take it slow and work your way up faster and higher. Tail presses are also a beginner friendly trick that can look steeze when you dial it in.
Get a helmet, and some padded protection if you can. I'd say a helmet is a must when learning and the padding will help reduce the pain from falling which in turn will build confidence.
Most importantly, have fun. Oh, don't forget to work on your switch riding. Start on the bunny hill and when you can ride that out switch the whole time, start moving to bigger runs. Good switch riding is important for when you start doing bigger tricks.