What is the best way to approach a terrain park on skis for the first time?

im 18 now, ive been skiing since i was young and ive definitely got the hang of it... i can do circle runs no problem and usually black diamonds. i wanna try approaching the terrain park, its always looked fun but i just have no idea how to go about it. i was thinking the box or a small rail or something. but i was wondering if i would just hurt myself, because i cant do moguls too well and those arent even off the ground. also my skis are kind of old, barely even parabolic and no nice tips, just regs. my boots are hot though but that doesnt really matter.