First of all Congratulations on your new addition! I Pm'd you a website that is very knowledgeable with pit bulls. However, my advice to you is learn all you can to be a responsible owner for your new girl.

No dog parks!! Dog aggression is very common in this breed and can be managed but not trained out. However, Human aggression is not to be tolerated and these dogs should welcome each person with open paws so to speak and make horrible guard dogs because they are so friendly!! Dog aggression does not equal human aggression just to be clear.

Dog parks are a bad idea anyways for any breed, you don't know what vaccines the dogs have had, and owners just talk while their dogs play without watching them and you cannot trust your dog to be safe there. You can however have supervised play dates that is in a controlled environment.

Pit bulls LOVE, LOVE people and do not need doggie companions as they weren't originally bred to fight other dogs, they were bred to bait bulls in the beginning but Dog aggression (DA) has and will always be part of their history and you may not like dog fighting and I am NO way advocating it..

but it's in their genetics to be aggressive towards other dogs. If you have another dog do not ever, ever leave her unsupervised with your other dog or other animals.

Pit bull ownership is rewarding, but you must be responsible and have thick skin. If you were to get another dog, always get the opposite sex but it doesn't mean 100% that they will get along. I am sorry Karen with all due respect, but I do not agree she should lie about the dog's breed to people. It will be a chance to educate and change a person's mind.

Unless she looks like a lab, I wouldn't worry about it lol. But she may look more like a bully breed as she gets older and you will want to educate! Also, for her to be safe (and your house) crate her when you leave and especially if you have other dogs/animals. You must have thick skin with owning this breed.

If someone says something to you like "Oh I don't care for pit bulls" and it upsets you; just smile and walk away. You do not want to blow up at them, education is the key. If you do not want to educate, just smile and keep walking with your dog. I would like some pictures of her, please.

Here are some links you and your girlfriend can look at -

http://badrap.org/rescue/breed.html
http://badrap.org/rescue/myths.html
http://badrap.org/rescue/owning.html
http://badrap.org/rescue/responsible.html