A quick note, partly so that I can find this info again:
Strobox is a place for all types of photographers to share how they set up that amazing photo! The easiest way to learn is to look at photos and their lighting diagrams so you can see for yourself how they were created.
Strobox is an iPhone App that allows you to record a diagram of how you set up your lighting in a particular shot or shoot. It also provides a community where people can share information about how they took a particular image in terms of lighting. This might be a way for me to learn about artificial lighting – as I have little experience in that (I don’t even own a flash at present).