In order to complete this exercise, you'll need to create an ArcGIS Online organizational account. Your ArcGIS Online organizational account can be accessed using your OSU name.# and password, and the account is created for you the first time you sign in. To create your ArcGIS Online organizational account (or sign in if you already have one), follow the steps in the document linked below.
Once you have signed in to your ArcGIS Online organizational account, move on to Task 1.