It will be on the upper left side as "Data ONTAP PowerShell Toolkit Downloads" When you click thru you will find it as DataONTap.zip (the rest are unneeded). Just expand to your powershell modules directory and do and import-module DataOnTap.
Will bring up the documentation in a browser window. I like it because it lists the categories, commands, and APIs. For each command it lists detailed information and examples. If you know which command, and you just want syntax or examples, you can always use get-help as well: