Lighting Breakdown

Following on my recommendations for lighting rigs, here is a series of tutorials on lighting. It was been written by Richard Harris, who is an animator and painter, so most of his examples explain how to recreate realistic lighting conditions in 3D and on canvas. That might be less useful to videographers who are looking for practical lighting solutions, but he does a good job of explaining the terminology, and has a number of examples of exactly what different lighting setups look like.