Microsoft
Excel Books
It's an excellent book for anybody wishing to learn Microsoft Excel. You can quickly learn how to design great spreadsheets, use formulas and functions, protect your data, create cool charts, etc. Watch a video on how to create pivot tables.The price is quite affordable. One of my favorites.
This book is not for beginners. If you have been working with Excel for some time and wish to learn more about data analysis, I would recommend this book. The examples are excellent and practical. The price is also OK.