Some people will say to throw a ball with your partner while practicing callouts. My partner didn't study, so I asked around if i could observe sim sessions and brought my profile packet with me. If you sit in the back seat and follow along, you'll have a better opportunity to correlate callouts with events in the cockpit and why you make certain calls at certain times. Once you can make the calls in your head as or before they're said around, you'll know that you're ready.
As far as the profiles themselves, do yourself a favor and simplify the packet. There's 4 or 5 takeoff profiles and the same number of arrivals etc.. Most of them are the same except for a few changes. My suggestion is learn the normal takeoff-arrival-landing or "circle of life" and then learn whats different about the other similar profiles without making it a completely different procedure from beginning to end. I probably tossed 4 pages out, and only had a few highlights on some of the pages.
For those that dont have previous 121/jet experience I recommend:
http://www.amazon.com/Turbine-Pilots...+pilots+manual
http://www.amazon.com/Everything-Exp...essional+pilot