Nellie, sweet lil girl!
Looks like you have already been given some real good advise and websites.
We have TWO American Pitbull Terries, brother and sister. They are great, loyal, loving and funny as heck! Love her and teach the rules of your home, never let her play with your other pup get too loud or aggressive. Our two love to get each other going but they have a limit and know the rules. They play good with other dogs that want to play, the male will growl through the fence at the old dog out back but that guy starts it. Pits usually wont back down if challenged. Our are protective on leash, in the car, and if you knock on the door.
Sadie Lee...sweet, loves everyone and thinks kisses makes everything all better.
Zeus...big love bug, super loyal, passive and laid back but does like strangers approaching him. He usually wont approach anyone else he knows you.
If we can ever be of help, feel free to ask. There are quite a few members here with Pits and Pit crosses.
Here are ours: