Purna Duggirala’s blog is a go-to resource for all things
Excel: Functions, PivotTables, Charts, Dashboards, and VBA.
The Spreadsheet Page
John Walkenbach is by far the most authoritative Excel
writer, who published most sought out books on Excel.
Pearson Software Consulting
Chip Person has put together a comprehensive list of Excel
tutorials, with the emphasis on VBA and advanced functions.
Debra Dalgleish offers advice and tips on different
Excel topics. She is a published author of 3 PivotTables
books. Her ExcelTheatre blog features hilarious Excel-related
Daily Dose of Excel
“Excel tips and other stuff” from Dick Kusleika and other
Peltier Tech Blog
Jon Peltier’s blog has more information about Excel charts than
you can possibly handle.
Bill Jelen authored numerous books on various Excel
topics, his forum is one of the most visited Excel forums.
Mike Girvin created over 2,200 how-to videos covering various
Excel topics of interest.
Daniel Strong runs YouTube’s # 1 Excel VBA Training and
Directory listing of all Microsoft’s Most Valuable Persons in
Excel. Web design, circa 1994 is just an added bonus.