It sounds like you're very psyched already. Just don't get totally stressed. It is a COURSE. So they are going to teach you all this stuff.
Just remember that to finish first, first you have to finish. And that means safe and deliberate handling as a first goal. This is one of the things that a good BB instructor will stress. Proper holster drawing means getting a good solid and consistently indexed grip on the gun before you lift it clear. I recall that much of the first 20 minutes of holster drilling didn't even see the gun leave the holster. We simply learned to move our hands to a solid and consistently indexed hold on the butt of the gun. We did a few minutes of this then he talked about something then back to some more grabs, then talked then more drills.
All such drills start with doing them slowly to nail down the proper motion first. Speed comes later.... MUCH later if you're smart about it. For now and even your first match or two keep it down to a pace which let's you think about each movement. You want to be fully connected with what your hands and trigger finger are doing from the time they first begin to move to where the gun is extended out and the trigger finger has pulled through the first shot or dry fire click. That's another one that came direct from the instructors.
There's a lot to learn in terms of gun handling and moving with the gun. So don't figure that you're going to be the next champ in your first match or even your first season. Just learn to do it right. Then do it right every time at a pace which you can manage. In time that pace will speed up and you'll rise in the results. But by doing it this way you'll stand a better chance of getting there without a DQ or any other handling infractions.