Strongly recommend that you visit the Amazon Forum here on Parrot Forum and read the two Threads at the the top of that Forum. They will provide you will very important information regarding loving and living with your Amazon!
Specific to your Amazon. I recommend that you assure (if you are located in North America or the EU) that the Seller provides you with a Hatch Certificate, which assure you it is not a Black Market Parrot. But, also provides you withe the name of the Breeder and contact information, the species of both parents and where the Parrot has been between Hatching and now.
Note: Black Market parrots have become common with the open Boarder to the South of the US.
Your Specific Amazon is part of the huge family of Amazona Parrots and although it is specific species it has connection with the Yellow-Nape and Double Yellow Head Amazons. Kind of a mix as they ranges abut each other. Point being you can use those two species for general information.
Face time with a new Amazon is commonly not recommended as you need to develop a Bond first and face bits can be very painful.
Target getting you Amazon DNA Sex tested and Microchipped!