Steven,
I think you are SOL on a book that covers everything!
You might try getting a hold of the AKC rules for trials and another for hunt tests. THe are pretty much straight forward, not that ambiguous. I think they are free on the web site.
www.akc.org
Any questoins after that, I would be happy to help out.
There are many formats of trials, each with their own rules. MAny are similar, all are fun! A bad day out with your dog is still far better than any good day at work!
Phil
REO