This is, without a doubt the best training value around. The DVD is beautifully produced and the topics flow nicely. The detailed menu lets you easily go back and reference specific topics. I bought it specifically to review the Nikon menu system but soon found myself watching the entire DVD. Even if you've used the D7100 for a while, you'll find tips in each section. And, the DVD is actually interesting and engaging.
The bonus photography class included on the DVD also did not disappoint. Not only did it cover the basics, but it included really helpful explanations on how the camera determines color and the differences between JPEG and RAW.
The training that you get from this DVD surpasses what you can learn from training provided by NIkon.
Kudos!