You'll want to bookmark TechExpress, as you'll use it for most everything while you're at Tennessee Tech.
In your Information area (on the left), there's a section labeled "EagleNet WiFi Key". To see your EagleNet key, click Show Existing Key.
Your access key is valid for the life of your account.
However, should you need to reset it for some reason, simply click the Reset Key button. If you need help in resetting EagleNet on your device (also called "forgetting a network"), check out the article How to Forget a WiFi Network.
How to Connect to EagleNet
On your device, connect to the WiFi network called "EagleNet".
You will be prompted to enter a security key. This is where you enter the key you obtained from TechExpress (in the steps outlined above). Enter your key.