How do you do that?

It took me a couple months before I could remember most of the warm-up movements and the terminology of our gym. I’m still learning new things every day. As I drank the kool-aid and got hooked on CrossFit, one thing that fed my interest was looking at the workout the night before. Whenever there was a movement or lifting exercise I couldn’t remember, I would search Google and YouTube with something like “<Movement>” + Crossfit. Chances are there is always a short video of someone explaining the movement. That helped me prepare my mind to listen to my coaches. 
DOWNLOAD THIS PDF document with diagrams and key points on how to move well. This information is collected from CrossFit and it’s L1 handbook. I think you’ll find this a useful resource in your first couple weeks at our gym.