It's been a few years since I've been through but I think the basics are probably the same. You'll get a good-size binder that covers benefits. You'll get a company overview and history. After the pleasantries, then you'll get down to work, reviewing the FOM (Flight Operations Manual). You'll also get presentations throughout the class from various departments around the company. Depending on his schedule, you might even hear from RTS himself. The union will also send in a representative to give you a welcome. I would think that you'll also do some training in a pool: rescue swimming and such. At least, we did that when I was in indoc. At the end of indoc, you'll take a written test over what you've covered in class. It changes but at least part, if not all, of that test is open book.
One thing that I highly recommend you do before indoc is sign up for all of the various frequent flier and hotel programs that you can. At one point during indoc, you'll have the option to submit those numbers to the travel department and they'll input those into your profile. I find that very handy and it's nice to check into a hotel or at an airport and already have your membership number showing on your reservation.
Good luck and enjoy indoc! :beer: