The following video tutorials explore how the fundamentals of photography align with controls and features of digital cameras. Photography is still all about the capturing of light, and controlling how light contacts a light sensitive surface, whether film or digital, is critical in becoming a more accomplished photographer.
Light, Lenses & Sensors Part 1
Light, Lenses & Sensors Part 2
Everything in photography is a trade off
Depth of Field
Want to know how to use your camera?
Lynda.com (remember to be logged in before clicking the link) has a number of video tutorials on specific cameras, from point and shoot through to professional DSLR cameras. Search for the name of your camera and see if there is a tutorial specific for you.
Canon 5D MIII
Nikon D800e or D810