There are two titles available in Closed Reserve :
How to use SUM and auto SUM functions in Excel
Whenever you have to work with tons of numbers and make various calculations, use the sum function in Excel to make your task easy. You can also apply autosum in excel to make calculations for you.
Excel 2010 - Basics & Formatting
The absolute basics you need to know about Excel 2010 (Basic facts and formatting).
Excel 2010: Simple formulas
Excel can be used to calculate numerical information. In this lesson you will learn how to create simple formulas in Excel to add, subtract, multiply, and divide values in a workbook. Also, you will learn the various ways you can use cell references to make working with formulas easier and more efficient.