I agree with Neil, a cheaper option would be the pamphlet Guy Wallace did for the BDS, who I think still sell the - Training Dogs for Woodland Deer Stalking. but it's just the basic training and the deer chapter from the Versatile gun dog - you don't get all the information about retrieving, hunting and falconry which is quite entertaining.
Good luck - I'm 8 months in on my second GWP and this ones proving harder than the first one!