Yes, you heard right, I would like to learn how to use a flash properly (not flash techniques, the actual workings of a flash. ETTL explained etc etc). I know, I have spent countless hours banging on about how the Strobist folks are the trainspotters of the photographic society, but I am looking at doing some more paid work, and I am tipping it will involve a flash at some stage. For now, I just want to be able to learn some of the basics. No off camera stuff just yet. Just how to use my current flash, a Sigma EF-500 DG Super (wow that sounds impressive), to its potential.

So, if you know of any online tutorials or guides, leave me a comment here.