DSLR TRAINING SERIES
Here's a thorough overview of DSLR lenses and modes, courtesy of www.Butterscotch.com.
While this series might appear to be geared toward photography and not filmmaking, the lines between the two are blurred as filmmakers and photographers are [now] using the same equipment.
Regardless of its use, a professional must know their equipment. In that light this series provides a wealth of valuable, useful information.
Overview of DSLR Lenses
Using prime lenses
Using zoom and telephoto lenses
Using wide-angle lenses
Taking close-up shots
Understanding the mode dial
Using shutter priority mode
Using aperture priority mode
Using manual mode