The breeder will probably have as many questions for you as you have for him/her. They'll want to know about your experience with the breed and whether you're interested in a show or pet quality puppy, what kind of environment and training you'll provide, etc. Good breeders want to insure that their puppies are going to good homes.
You'll probably want to know what sorts of health screens the breeder performs on breeding stock and puppies and what kind of support is offered to puppy buyers. You'll probably also want to check with other puppy buyers to see what their experiences have been.
Here's an excellent site with checklists for you to use.