Aseem Nayar posted a Documentation Map for Microsoft Office PerformancePoint Server 2007 at the following link: http://office.microsoft.com/en-us/performancepoint/HA102422371033.aspx
It's great to see that the documentation is starting to flow.
Here's a link to some training videos too. http://www.microsoft.com/business/performancepoint/resources/training.aspx