Sometimes, it's helpful to show someone what to do, then just tell them. Taking Screenshots is not only a helpful thing, but an easy thing! No matter what the device or operating system you are using, the link below will show you how to take screen shots with your keyboard. These screenshotting techniques are not just web based, but built into the Operating System (windows, IOS, Mac, etc.) I use screen shots a lot, whether in a tutorial or showing/teaching a concept to the kids. Probably not something you use everyday, but keep it in the back of your mind as far as a tool you have in your tool kit.