I invested a very modest amount of £ in some gel filters for my flash, so I thought I would spend this week getting to know a bit more about them. It's probably a bit out of date, given the amount of processing software around, but I thought it would develop my photography skills, rather than my PC skills!
@jonesp Paul, hi, off camera flash is on the wish list. I was completely surprised by the effect a simple coloured filter on the flash could make. It must have been revolutionary in the days before digital processing.