Please follow the steps below to create an account:

1) Go to arcgis.com and click Sign in. You will see the window on the right, click on "Sign with Enterprise Account"

2) You will be asked to Enter your ArcGIS organization's URL. Enter clemson and click Continue.

Click on "Using your Clemson University Account"

3) This will take you to a new window where you will be using your standard Clemson login. 

Enter your Clemson username and passowrd and click onLogin.

4) If you see the window below that means you have successfully created your ArcGIS Online account.​