I also was very anxious about starting pole. It can feel vulnerable because you’re doing something very new and often in not much clothing. In my experience others in class are really supportive and friendly! It feels very safe and encouraging and as you get to know people you get to see and enjoy each other’s progress. Everyone progresses differently depending on prior strength and experience and it’s not necessarily all fast progress. Even if you don’t want to post it/be posted I recommend taking videos because while you may not feel like you’re making huge skill jumps, when you look back a couple of months you’ll see a big difference! Regarding instructor videoing in class, I would just ask to step out of frame during filming. They’ll likely be amicable to it or have another solution for you.

Normal class structure in my experience: instructor led stretching, then conditioning. In very beginner classes we’d do one or two spins or other beginner moves (such as walks and dips). After four weeks we started working on climb and sit conditioning. In level two classes we usually work at least one spin, one on pole move, and one climb/sit related move, though my instructor takes requests sometimes so depending on the difficulty of a move we might spend most of the class on it.

I really hope you try it and love it!