The tilde isn't the only sign you need to understand to truly get your head around Excel's inner workings. For example, the at (@) sign returns a single row value instead of spilling an array, the ...

Excel has a number of formulas that enable you to count the time between two dates. You can specify that you would like to count the difference in hours by adding a time specifier to your formula or ...

There are a few ways to count the number of items in an Excel list, depending on the data you have. In this tutorial, learn how to count items in Excel using the COUNTIF and SUBTOTAL functions. Image: ...