You're taking a CCR intro, Tnt, that's dynamite.
It'll be enough to hook you.
If possible have Ron prep the unit while you're there. That'll give you a good look at the inner workings, as well as what you'll have to do to dive it. And since he'll have his prep and pre-dive routine down you'll also get an idea how long it'll take once you do.
If you're in an indoor pool you'll probably be able to hear and understand him uw. The lack of noise is amazing. He'll pretty much tell you what to do and what not to. Try differnt positions uw, to see how (well) the rig breathes. Blow out some gas through the nose and watch the handsets while the solenoid adds gas. Add some manually, both dil and O2, see the handsets respond.
Hang around afterwards to see the post-dive if possible.
Ask any question that comes to mind. The only truly stupid one is the one never asked.
Most of all enjoy the experience.
By the way, Ron also teaches Megs, have a look at that one while you're there, have him point out the differences and explain the pro and cons. It'll give you a better understandig of both rigs.
Add-ited: As for you local diving, you want to check with the local dive operators if they'll let you use a CCR. If you're on boats, not everyone will.
Diving with an OC buddy isn't much of a worry in the beginning, you don't want to push past your experience anyway. Just make sure the have a basic understanding of your rig. Madmole has a nice .pdf file on his site that can help.
Join
www.ccrinfo.com 's Inspiration & VR3 board, it has over 700 members. Hopefully you find someone in your location.