Create your ArcGIS Online Account (arcgis.com)
Please follow the steps below to create an account.
1) Go to clemson.maps.arcgis.com, you will see the following window. Click on "Using your Clemson University Account"
2) This will take you to a new window where you will be using your Clemson credentials to login. Enter your Clemson username and passowrd and click on Login
3) If you see the window below that means you have successfully created your ArcGIS Online account.