ArcherII
The advice given by boomerangben and others is good. You've obviously learned a lot from the MS sim, but now you're going to fly the real thing - don't get too bogged down in the technical stuff at this stage. Concentrate on enjoying the experience of flying a real helicopter, and find out what the helicopter does when you move the controls - there's plenty of time to learn why it does it when you start your lessons.
I also echo the recommendations to read Randy Padfield's book "Learning To Fly Helicopters". He's an experienced professional pilot and instructor, and IMHO it's one of the best 'introduction to helicopters' books available.
ISBN: 0-07-157724-6