Gym solution?

So I just joined planet fitness yesterday but that’s the most Ik, i don’t know how to use the equipment, what’s the core function of the equipment as it relates to body building. I need some help with my journey, commitment I have that pat just need someone help with developing a routine.

Or any advice would be appreciated if a gym partner is not the solution. Also I don’t have that much body fat I’m about 5’6 weighing 120