Performance Point

BI Primer
http://www.threewill.com/2011/01/sharepoint-2010-bi-primer/
http://www.threewill.com/2011/01/performancepoint-toe-dipping/

MSDN
http://blogs.msdn.com/b/performancepoint/

Technet
http://technet.microsoft.com/en-us/library/ee661741.aspx

Data Sources
http://technet.microsoft.com/en-us/library/ff928315.aspx