Third party online articles and books on leveraging Excel pivot tables.
Tips for Working with PivotTable Technology in Excel 2002
, Online Article,
http://www.microsoft.com/office/previous/xp/columns/column11.asp
What's So Great About Pivot Table Reports?
, Microsoft On-Line Training,
http://office.microsoft.com/training/training.aspx?AssetID=RC010136191033&CTT=98
Accessing and Analyzing Data with Microsoft Excel
, Book by Paul Cornell
Guerilla Data Analysis Using Microsoft Excel,
book by Bill Jelen
Excel Data Analysis: Your Visual Blueprint for Creating and Analyzing Data, Charts and PivotTables
, book by Jinjer Simon