It's a question of appropriate early socialisation.......making sure that the staff is comfortable around other dogs but not seeing them as really great playthings to begin with. It is important with Staffs to teach them early on about self control, too not allow the excitement levels to climb and climb and climb.
Plenty of firm consistent boundaries...lots of play with YOU with toys..tuggy games are great but I would avoid wrestling games on the floor...........you want to avoid high arousal activities.
Plenty of decent walks off lead.....teach obedience cues early.........Come, stop! follow me, Look! Wait, Sit, Down.
Put commands on the game so you can stop start them at your request.
Feed good quality diet...avoid Bakers, Pedigree and Hills.
Teach your dog to cope alone....because staff's are so people orientated they can experience very easily seperation distress....your kitchen may look like there is nothing to damage but I had a client whose staff had managed to rip all the kitchen units of the wall in her distress...if there are floors and walls believe me the dog can do considreable damage ( just been to see a gsd that eats the plaster of teh wall when dad goes out

How long are you intending to lerave this dog? Do you work...if so what hours? What provision will you make for your dog when you are out?
So it is kind to teach your dog to cope alone. Staffs are great dogs and not hard to obedience train at all and clicker training is great for them..lots of exercise, lots of stimualation as opposed to arousal, lots of un interesting inter-action with dogs, get them focused on play with you......fantastic family pet.
Be aware that there is a breed inclination to aggression towards other dogs...this is a fighting breed afterall...and manage your dogs environment so that your dog is not put in a difficult position.
Last but not least GO TO A PROPER BREEDER.....research, research, research...find someone experienced who is concerned about who owns their dogs. Responsible breeders will want to promote their breed and will sell to pethomes carefully. GOOD luck!
Regards pulling no dog pulls automatically on lead it is a learnt behaviour...if you teach a puppy early how to walk nicely on a lead your dog shouldn't pull you and "pulling strenght" should be irrelevant.