From the original article: "Many SEOs are now finding themselves faced with the task of doing fairly complex data analysis to improve their search strategies, and Excel adequacy is not quite enough.
With this document I intend to share some of the most valuable aspects of Microsoft Excel for the SEO. It is far from an exhaustive look at everything that can be done with Excel, but hopefully a strong foundation for the SEO’s toolkit.
So if pivot tables, IF statements, absolute references and nested functions make you scratch your head, read on..."
In-depth. Comprehensive. 8/10
Full Guide: http://www.distilled.net/excel-for-seo/
(Special thanks to Alex Briscese for suggesting it)
Via Robin Good