When you think of studio lighting, you probably think of elaborate multi-light setups, and while those certainly have their place, there's no reason you can't create compelling imagery with a single light. This great video will show you how to achieve exactly that.
Coming to you from Manny Ortiz, this great video shows you what you need to think about when you're working with a single light (and perhaps a reflector). When you're first starting out, I think it's advisable to work with only one light before you move into more complex setups, as you'll learn how falloff, modifier size, subject distance, etc. all affect the final result, which will give you the tools to engineer whatever is in your imagination down the line. That being said, one-light setups are just as valuable as their counterparts and are actually preferred by a lot of photographers both for their convenience (especially if working outside) and because they provide a more natural result, as we're generally accustomed to viewing things lit by a single source. And as Ortiz shows, depending on the size and placement of the light, they can allow a lot variability in the model's posing while still maintaining the overall result.
[via Manny Ortiz]