It can be difficut to navigate all of the information available for PerformancePoint Server.  One of our UA writers, Jeff Carr, recognized this and has put together a great compilation of PerformancePoint Server sites. 

It can be found here:  http://blogs.technet.com/datapuzzle/archive/2008/03/21/help-how-to-guides-manuals-forums-for-microsoft-office-performancepoint-server-2007.aspx

 I know Jeff is interested in your feedback, so take a look and let him know what you think!