Tutorial: how to use the Vibrance adjustment. Works in any recent version of Photoshop on either Windows or Mac. From my Mastering Photoshop Layers course on Skillfeed.com.
Between the Sheets — Excel podcast episode 31: Excel’s secret DATEDIF function
A quick and simple way of finding the number of days, months or years between two dates is Excel’s secret DATEDIF function. When you type it in a worksheet, there’s no popup syntax help to indicate the function exists.