I have found this book invaluable in finding a simple explanation of how to execute certain tasks in Excel 2007. It can be so frustrating trying to find ones way around the menus and tabs. When a new version of Excel comes out it is so different from the previous one.Tabs aren't always where they used to be. Using Microsoft Help it is not always easy to identify the subject and does not always provide the answer. This book is set out in a very logical and clear format. Chapters for each major function are divided into individual tasks with clearly defined steps that are easy to follow with clear illustrations. I have gained knowledge of Excel which I would not have been able to do otherwise and will be refering to the book as long as I continue to use Excel 2007.