How to take a screenshot on a Mac?

There are a lot of keyboard shotcuts of MAC. As a blogger, I take a lot of screenshots on my MacBook Pro.The Command-Shift-4 method is frequently used to take a screenshot of a selection of my desktop, but there is a simple way if you want to take a screenshot of an open window. 

There are also many shotcuts to take a screenshot.

   Command-Shift-3: Take a screenshot of the screen, and save it as a file on the desktop


   Command-Control-Shift-3: Take a screenshot of the screen, and save it to the clipboard
   Command-Shift-4, then select an area: Take a screenshot of an area and save it as a file on the desktop
   Command-Shift-4, then space, then click a window: Take a screenshot of a window and save it as a file on the desktop  
   Command-Control-Shift-4, then select an area: Take a screenshot of an area and save it to the clipboard
   Command-Control-Shift-4, then space, then click a window: Take a screenshot of a window and save it to the clipboard

If I don’t like keyboard shortcuts,I could click like this: