Hi Rich, congratulations to you.
Remember the course is designed to get you through, not trip you up. It will be intense but manageable. You'll have more manuals than you know what to do with, but try and focus on learning limitations and company SOPs. These will stand you in very good stead when you get to the sim.
The best advice would be to find someone in your company who has recently been through the TR course, and get all the information you can from them.
Could give you chapter and verse on the Q400, but it probably wouldn't help too much - about the only thing in common with the earlier models is the seats!