It’s often useful to be able to send an image of your screen, or part of your screen to someone. In fact I use this facility all the time when creating these blog posts.
On the Mac, it’s very easy …
Press Cmd-Alt-3 to capture a complete screen
Press Cmd-Alt-4 to draw a window that you want captured
To be guided through the options you can
Press Cmd-Alt-5 and from the Options screen decider where you want to save your Screen shots [I save them to a Dropbox folder so they’re available between my two machines], and also choose the option for the type of screen capture you want, or even to Record a series of actions.
On the iPad/iPhone, it’s straightforward too. You can capture a screen by Pressing the Power Button and the Home Button together [It works best if you press the former just before you press the latter].
To take a screen shot in Windows, I suggest you follow the advice in this post. Or alternatively watch this video …
Jim has sent me this note as well …
“It might be helpful for your notes if I run through my Windows 10 sequence. The relevant key on my laptop is labelled SYSRQ/PRTSC, so I have to press the ALT key at the same time to print the screen. This puts the image onto the clipboard, so I then have to save it somewhere. I usually go to Paint Shop Pro and paste it as a new image. One thing I am investigating is what happens if you have two pages at once on the screen. At the moment I can only print one of the pages, depending on which I click on.“

Ah ha! I have investigated, and to print a whole screen with two or more pages on it I have to press FN (the ‘function’ key) + PRTSC. This is actually the ‘snipping’ tool, so the whole screen is just one option with it. I can select a small area (e.g. an article or photo from a magazine) to copy.
This of course just applies to my Toshiba Windows laptop, but it gives you an idea of what might be possible with your computer.
Great stuff. Thanks for this. I’m sure all the Windows users will be grateful for your advice here. I sometimes feel rather negligent in my support for Windows.