Let's see... Just the normal common sense stuff....
Be sure you have all your supplies before you pick her up like leashes, collars, bowls, chew toys, talk to the breeder and have the same food they recommend, crate....
Crate is only if you decide to crate train, I am a big advocate of crate training, but others may disagree.
Look into training and socialization classes in your area, and be ready to enroll her as soon as you can. Classes are essential especially for a first time owner, and there may be a waiting list at the better ones. (There is for ours, anyway)It is so important that our big guys know how to behave....
Hope I have helped a little bit. Most important, love her lots, and get ready for the roller coaster ride of your life!
Stella