The most important thing to do is get a copy of garmin's g1000 pc sim and gain as much time on the pc as you can. The g1000 is all about knowing what buttons and knobs do what (without hesitation) and how to get from one option to another. Armed with that knowledge its easy, without you will waste hours in the cockpit become frustrated and become one of the nay sayers.
The g1000 is a delight to fly with and does eveything you want with only a very few gotchas. It is definitely better with garmins digital autopilot.