Apple Numbers isn't as popular as Excel, but it’s a powerful spreadsheet application that offers all the essential features you’d expect. If you're thinking about making the switch, here are some ...

Data validation in Microsoft Excel is a great way to limit what can be entered into a cell. However, creating rules using a formula allows you to enforce even more precise parameters—and there are ...

Learn the difference between Excel COUNT and COUNTA, plus TEXTBEFORE and TEXTAFTER tricks, so you clean text and totals with ...