Tips & Tricks
You can record videos of your screen; you might want to record a problem or make instructional videos about using apps on your Mac. Open QuickTime Player and from the File menu choose New Screen Recording. Click the little drop-down arrow to pick the audio source and to choose whether or not to show mouse clicks in the recording. Now you can pick to record either the full screen or just a selection, and once you’re done, you can do the usual things – trim, upload to YouTube, AirDrop it to another Mac, or import it into iMovie for more precise editing.