How to Make Screenshots and Screen Recordings with Mojaves New Interface
You probably fall into one of two camps: people who haven't the foggiest idea what pressing Command-Shift-3 or Command-Shift-4 do on the Mac, and those who use those keyboard shortcuts regularly to take screenshots. Either way, macOS 10.14 Mojave makes it easier than ever to create a still image of what's on your Mac's screen and to record a video of actions you take on the screen. (And don't worry, the old shortcuts still work just as they always have.)