The main light for a video light setup is called the key light. Learning its role in a three-point lighting setup is essential for getting a proper look to interviews.

http://www.youtube.com/watch?v=wgrZ7-p_5HI

This is an excerpt from a full-length class from out partners at lynda.com. The complete course is 2 hours and 28 minutes and shows how to assemble the right gear, frame your shoot, and control the lighting on the set of a video interview. Get techniques that will flatter your subjects and your budget.