It seems like the days of cardboard key templates are over – they were a huge thing back in the old days when I started as a consultant in the computer labs back in college. Most of the cool kids would memorize everything, but more of the “returning” students would overlay the laminated cut-outs over the function keys for WordPerfect or Lotus 1-2-3.
Anyway, I’m only an occasional Photoshop user – touching up screenshots, and making dumb collages of friends’ heads I post on Facebook. So I never remember anything. Here’s a great download for Mac users of Photoshop CC. (There’s also a Windows version mentioned.)