Thanks Cop-Pop, that was helpful and probably for local level I should be alright.
I think I have more of an idea of specific things to find out about, having spoken to people and read up a bit more about it, but if anyone can help me with a few more specific things, as I am being treated to...
I've been to lots of shows before but normally am interested in the jumping rather than the showing side (and have never had a chance to compete myself), so am now looking for some help as I have a horse that I'm part loaning over the summer and the owner would like me to take it in the show...