If you’ve been in construction long enough, you know how estimating used to be. Stacks of drawings. Highlighters everywhere. Long nights with a scale ruler and a calculator.

What if you deleted a file or picture containing sensitive information that you thought was gone forever, only to find out that it wasn’t completely deleted in the first place? Surprisingly, that’s ...

If you use Excel 40 hours a week (and those are the weeks you are on vacation), welcome to the MrExcel channel. Home to 2,400 free Excel tutorials. Bill "MrExcel" Jelen is the author of 67 books about ...