Hey, welcome to the group! 
When you receive the machine and run through the User Manual, there are a few initial prints that are recommended to get you familiar with how the Glowforge interface works. I’d recommend doing those even if you are beyond that with your abilities…they just get you familiar with the interface.
Since you are wanting to get a jump on it, you can read through a couple of discussions that lay out how the interface interprets the designs that you bring in…it will really speed up the process. (And it’s a little bit different from what other laser cutters do, from what I understand, but you are likely already familiar with most of the processes, so that’s going to be a big help.)
Anything specific, just ask…there are a couple of CorelDraw experts here.