If you've made an adafruit.com account checking your order status is super-easy. Just log in at adafruit.com (upper right "Sign in") and then click "My Account". You will see your order history and more.

Once you're logged in and clicked the "My Account" link, click "Order History" - bam!

All your orders, invoices and tracking information are here. You can click "ORDER DETAILS" to see each order. Or click "INVOICE" to get a copy of your invoice. You can also click the tracking number that will display the shipping updates from the shipping service you selected.

... And that's it, you're all done!