Here you’ll find a PDF version of the Nikon D5100 user’s manual.
This 12-minute YouTube video covers shooting HD movies with the Nikon D5100 DSLR camera.
This seven-and-a-half-minute YouTube video is all about taking sports photos with the Nikon D5100.
This eight-minute YouTube video is all about taking photos of people with the Nikon D5100.
Here you’ll find a PDF version of the Nikon D7000 user’s manual.
This short YouTube video by Dan Watson of LearningCameras.com covers the issue of not being able to change the aperture in live view on the Nikon D7100 (and D7000).
Looking for a good overview of the Nikon D7000 and its features? Check out Nikon’s D7000 Digitutor.
Here you’ll find a link to a handy cheat sheet for the Nikon D7000 DSLR camera by the folks at For Dummies.