Formulas are powerful tools for performing calculations and analyzing data in Excel. In this beginner’s guide, you’ll learn how to use formulas and explore some popular built-in functions.

Excel for the web now supports conditional formatting, and the interface is easier to use than the desktop edition. Susan Harkins shows you how to use it.

In Excel spreadsheets, complex formulas are difficult to enter without making mistakes. Microsoft Excel’s LAMBDA() function can make such errors easier to find.