Go to Michael Andrews website:
Michaelthemaven.com and he has a great video tutorial for download and DVD on the nikon 7100. I ordered the crash course for my cNon 7d and it covered all the functions of the camera and more. Crash course is around 40.00 and worth every penny. Also you might purchase David Bush's guide on the nikon d7100 from amazon for 19.99 another great source. Good luck!