Photoshop offers lots of tools for automating selections, but two stand out from the pack: The first, Refine Edge, lets you modify your selection using five different parameters and preview the results in five different ways. America likes its lists, and here’s another one. Imaging expert and award-winning author Deke McClelland presents his list of the top 40 features in Photoshop—beginning with #40 and working his way up to #1—one weekly video at a time. Some are tools, others are commands, still others are conceptual. All are invaluable. Learn these 40 features and you’ll know Photoshop.