You'll also need a Temboo account, a Zendesk account, and a set of FedEx developer keys. You can create a Temboo account for free here, and a Zendesk account here.
To obtain your FedEx keys, begin by creating a FedEx account here. Next, find the Develop and Test tab on the FedEx developers page and click the Get your test key button in the middle of the page. Once you’ve agreed to the terms of service, filled in the registration fields, and accepted the Access Authorization License, you’ll see a confirmation screen with your FedEx web services credentials. We’ll use these later. You’ll also receive a FedEx test password by email after you’ve completed your registration; keep that handy as well.