Althought the author is pretty well versed in the use of Excel, it is not much help to those just starting to use the progeam. Written pretty much the same way most Microsoft "help" books are written. It assumes you have quite a bit experience with macros and other such "helpers".

With the recent changes on Excel 2007, in which there were several cosmetic and functional changes, this book is a good option for reference. The author is a real master, no doubt about it, on the CD provided you will see some examples that you would never expected to get out of excel. The only real complaint is in regards to the screen captures on the book, some of them are so POOR quality on resolution that you can hardly see it.
However, I would recommend you this book for those interested on developing sound data analysis skills in the application.

This book is an excellent reference for Excel formulas. However, the publisher, Wiley, should improve all the screenshots used in Chapter 18 (Pivot Tables) in the next printing - they are all blurred. The same screenshots in its e-book are also blurred.

John Walkenbach's explanation and examples plus the DVD disc makes understanding formulas a lot easier than I expected. I have definitly learned alot about Excel not only about formulas in Visita but his updates on Excel and Power Programming. Keep-up the good work John.

The Author really knows his stuff!!!
Again an accurate, concise, extensive reference tool for the beginner as well as the advanced user. This is my fourth excel book by Mr. Walkenbach and they are all of equal caliber. They all contain general background information as well as information dealing with other programming areas of excel (so that even if you only purchase a book like the VBA programming guide, you will still learn about macro programming and other general excel functions). Like all his books, this one gives the user a complete library of useful and professional approaches towards working with and solving excel problems. Good Job Mr Walkenbach!

I was looking for a way to... and I found it in a short period of time. I shall have this fabulous reference to dig into whenever I need it. Happy with this good book from Mr. Spreadsheet.

John Walkenbach is well established as a great spreadsheet mind and is not afraid to share the shortcomings of any software, including Excel 2007. Excel 2007 Formulas continues the tradition of providing, explaining, and demonstrating how formulas work and how you don't have to be intimidated by them. Everything is covered, and I mean everything. And just a note: even if you use StarOffice/OpenOffice Calc, buy this book since almost all the formulas listed transfer seamlessly into the Open Source spreadsheet, too -- a great value, indeed!