Just thought I'd say congrats on getting your new bird. Also, since she's an Amazon, watch her eyes and her tail. An over excited/territorial Amazon usually pins it's eyes and flares it's tail, and if you try to pick it up or pet it when it's doing this it could lead to a nasty bite!
Be sure to offer fresh foods. Fruits, veggies, cooked foods.. there's one book called Gourmet Bird Food Recipes
that has a lot of good food you can make for it. Fresh food is necessary for good health. Amazons are usually not to picky about food.. but there are some exceptions. If she doesn't want to eat any, just try offering it with your fingers (once she gets more used to you) or just keep offering it in the dish everyday until hse figures out it's food.
Petting could come along VERY slow. We got an Eclectus about a month ago, and she still doesn't let us pet her very much. She'll let us kiss her and everything but no petting! Petting takes a great amount of trust. A parrot really has to trust humans.. has to trust YOU.. to offer it's neck for petting! Don't try to rush it. Maybe just let her relax and ask her if you can pet her, and move your hand towards her back. If it backs away or her eyes pin or something.. take it as a hint to not try to pet her. Eventually she will probably allow you to pet her, but just respect her boundaries for now. For the first few days/week birds can be extremely nervous in a new environment and should be left alone to get used to their new surroundings, so try not to "bother" it too much. It's good to still try to get her out and everything, but if she absolutely refuses I'd just let her stay in her cage for awhile.
Our new baby, who we've had over a month now, like I said, is STILL a bit nervous around us. She didn't really step up and out of her cage until about 2 and a half weeks after we brought her home, so don't expect everything to go real fast like 'tiels might.
Anyway, I've rambled enough. I would recommend getting a few books on larger parrots/amazons for sure. Most of all have fun and don't hesitate to ask if you have anymore questions!