To find your tracking information through your account, follow the steps listed in this article.
You also receive an email with tracking information as soon as your order ships.
If you have chosen standard shipping for your order, your order will be shipped with FedEx and then handed off to your local Post Office (USPS) for the delivery.
The same tracking number carries over from the Fedex site to USPS. You will see the handoff marked within your Fedex tracking as "Tendered to local delivery service provider." At that point, you can search the same tracking with USPS which will give you all of the most recent activity through the final delivery to you.