Last weekend I took a G1000 seminar to become familiar with its capabilities, working towards a checkout. Max Trescott is an authority on the subject and if you have a chance to attend one of his classes I highly recommend it. He's published a book on the subject and a CD ROM training course is available as well. I also found a nice listing of G1000 manuals by a local club. I figure time spent on the ground will save me expensive instruction in the air and make the time spent actual flying more productive.

G1000 Training CD and Book, Max Trescott
Glass Panel Aircraft