Dan Lennie at F-Stop Academy has put together some very extensive training programs for would-be video producers. One segment that he is offering as a stand alone module is called "Lighting For Digital Filmmakers" and is currently at a special price.
The one thing I think is a problem for those of us trying to learn more about lighting is that most training only deals with 3-point lighting and generally the examples shown are interviews. It becomes infinitely more complicated, however, when you are lighting a "real-world" scene, especially one in which characters are moving around. Dan deals with this more effectively than most training courses do. You can learn more by checking out his website.