More people I know have spent time recording their screens on their Macs for teaching and demos than ever. Unfortunately this had a lot to do with lockdowns and trying to show how things worked on their computer screens. Some resorted to having to purchase software such as Camtasia, which is a great bit of software that I use all the time for creating tutorials.
However, you might just want to record a one off or perhaps you just don’t have the budget just now for purchasing another bit of software.
If you are a Mac user you will be pleased to know that QuickTime, built right into your Mac and free, does just this. You can do this by opening QuickTime or by pressing these three keys, command+shift+5.
Here’s a video I made to show you how it works and what your options are.
If you want to see how to record the screen on your iPhone or iPad check out this post. https://garysquickbytes.com/2020/03/30/recording-the-screen-on-your-iphone-and-ipad/