I don't know the OP, but what if he has no concept of where his hip joints/kwa actually are and how to start using them? Many people don't - simple flowy tai chi can at least point you toward properly aligning your pelvis and understanding how to open/close kwa. That in fact is what started sending me further down the rabbit hole of this stuff and finding Sam, Dan, Aunkai etc.
again just for the complete newb to get started...
I agree. Pick up what learning you can, when you can - one word of advice: if you are following along as you watch the tai chi instructor, don't focus on his/her arms - watch the hips/pelvis/legs and the weighting and mimic that.