Benelli, Congrats!!!!!
Here are the things that are goin to be the most important:
1. Flows
2. Memory items
3. Profiles ( know these hands down)
4. Limitations
Not to say you don't need not know anything else, but these will be the items that will be stressed over and over during ground school. Any FMC info you can get will help as well, being that you will be the lead programmer. Everything else will be detailed in class, the instructors you will encounter are second to none and are there for the newhires. The time in class will go fast and not to mistake the laid back atmosphere for a time to relax and not study, work with your partner closely and working in groups will help to learn the procedures. IMO, this is a chance of a lifetime, study every night and work on the items detailed above, relaxing, although important but not the norm.
Have fun, we are all blessed to be here, take nothing for granted. Smile you are on your rainbow ride!!!