Here are some links to a great set of online PerformancePoint Server 2007 tutorials, including configuration of the planner modeler, Excel add-in and dashboard designer:-
http://blogs.technet.com/riyazj/archive/2007/12/24/performancepoint-server-2007-training.aspx
Building a planning, budgeting or forecasting application - modules 1 - 9
Building a scorecard, dashboard or analysis application - modules 10 - 14