I also recommend you attending a camp once you have little experience at least, so that way you actually have fun.
Only get a coach imo, if you seriously have a desire to push yourself somewhere and maybe at least once if you seriously 0 clue how to approach learning tricks or snowparks. But im looking to do a video about that this upcoming winter, i feel like this part is still kinda untalked about it.
Lastly, as the others mentioned, watch as much videos as you can, that include things you want to do. Go with Friends, if there not into freeskiing (in general), bite the bullet go to a local park a couple times and try to make friends. I know its easier said than done (im a hella introvert myself infront of new people).
But long story short for park: Start small, always build a base -> master small things then step up.
Trickwise: learn 180s and switch 180s BOTH WAYS. try to learn everything both ways. even if your not a comp skier, it will boost all of your tricks technique wise so much. At least the easy tricks up to 7. Learn 360s next. once you mastered not learned them your free to do 540s and 720s easily.
Rail and Sliding, you will eat shit haha...sorry thats just how learning rails is
When it comes to off axis tricks, refer to videos and trampoline action. If you get hard stuck, you then start to think for a slight help by a coach or camp or friend for a day

usually, speaking of experience, its mind blockages that people prevent from doing it, so a different voice will most of the times crack the nut and allow you to do it.
lastly, ski ski ski ski even groomers. I've seen so many people try to learn park skiing and they have it so hard because there skiing technique is really poor. If you ski really well, learning tricks is super mellow.