Hi Steph,
I'm not an expert on hormone therapy, but as I understand it (and correct me if I'm wrong someone) hormone therapy works by lowering the level of testosterone. Testosterone makes the cancer cells grow faster, so by giving hormones the rate of growth slows down.
Steph, have you downloaded the toolkit on this site? I'm sure there's an absolute mound of stuff on all options, and they're written really well.
Louise