My recommendation would be to first find a good, reputable trainer, and work backward from there - the trainer should be able to direct you to a reputable breeder, and should also be able to help you temperament-test the pups. There are a host of "tests" you can give a puppy to find out if it's overly aggressive or dominant to start with.
Here's some info on bull terriers:
<a href="http://www.dogbreedinfo.com/bullterrier.htm">
http://www.dogbreedinfo.com/bullterrier.htm</a>
"Though this breed was once a fierce gladiator, he is much gentler now. A Bull Terrier might have a preventive effect and it might defend it's owner in a truly critical situation, but it isn't breed to be a guard dog. Courageous, scrappy, fun-loving, active, clownish and fearless. The Bull Terrier is a loyal, polite, and obedient dog. They become very attached to their owners. The Bull Terrier thrives on affection and makes a fine family pet. Bull Terriers like to be doing something and fit in well with active families where they receive a great deal of companionship and supervision.
They do not do well in situations where they are left alone for 8 hours a day. This breed can be a wonderful pet if very thoroughly socialized and trained, but not recommended for most households. Fond of both grown-ups and children, but may be too energetic for small children. They cannot tolerate teasing and children should be taught to respect the dog. They can be very protective and willful. Do not encourage this breed to be possessive or jealous. Bull Terriers may try to join into family rough housing or quarrel. They need very firm training and lots of exercise. Bull Terriers must be given a lot of companionship, or they may become destructive. Be sure to socialize them well. They can be extremely aggressive with other dogs. Unaltered males usually do not get along with other male dogs. Males and females can live together happily and two females can also be a good combination with care and supervision. They are not recommended with other pets. They make excellent watch dogs. This breed can be somewhat difficult to train."
If this is your first dog, I would SERIOUSLY recommend something other than a pit bull. It'll be a lot of work to train and because of their breeding there is little margin for error if you're not experienced in dog training and behavior, or if you don't have some serious time to devote to socializing them well.
I'm also not sure how good a hunting dog a pit bull would be, but I don't see why they wouldn't like it.
Good luck!