How to take a screenshot?
Press = Windows captures the entire screen and copies it to the (invisible) clipboard
Where can I find that key?
Look for this group of keys at the upper right of your keyboard. Note: Print Screen (PrtScn) might have been abbreviated differently on your keyboard.
How do I take a screenshot of a single window?
Hold down and press = Windows captures only the currently active window and copies it to the clipboard
You've copied the screenshot onto the clipboard. Hold down CTRL and press V to paste it into a document or email or you can save it as a graphic file.
Pasting into a graphics file
1. Start "Paint"
On Windows there is also a dedicated program for making screenshots. It's called Snipping Tool and you can find it by doing a search for it:
How to take a screenshot on a Mac
Hold down and and press = Your Mac captures the entire screen and saves it as a file on the desktop. The file name will look like “Screen shot 2015-09-15 at 08.45.00 AM.png”
How do I take a partial screenshot?
Hold down and and press = Use your mouse to draw a rectangle in order to specify what to capture – or press the spacebar and then click on something (e.g. a window) to capture it. Your Mac then saves it as a file on the desktop. The file name will look like“Screen shot 2015-09-15 at 08.45.00 AM.png”.
For more detailed instructions you can go to How to take a screenshot website. This content was reproduced that site.