Download the OnCommand_Insight_64_Reporting_Guide.pdf located on the support site at: support http://mysupport.netapp.com/NOW/cgi-bin/software/
The built in help menu in OnCommand insight also has great information and use case examples for reporting. I also believe there is a new NetAppU Advanced Reporting Course available.
Lastly, see the attached "whats New in 7.0.1" doc. It has some information about the new Storage Manager Dashboard.