I often use pictures of my computer screen to add to my blog posts and I do this by doing a Screen Capture with a Mac.
In fact there are 2 ways to do a screen capture with a Mac. The first is where you do only a portion of your screen and the other one is when you do a full screen capture. The nice thing is, you don't need to buy any software, it comes free with your Mac operating System.
Screen Capture With A Mac - Partial Screen Capture
This is really easy to do, just click Command + Shift + 4 and then you will be able to click on an area that you want to screen capture.
See the Video below to see how to do a partial screen capture with a mac.
Screen Capture With A Mac - Full Screen Capture
The other option you have is to capture the full screen. To do this, just click Command + Shift + 3 and then you will capture the full screen.
http://salestipaday.com/2011/10/15/how-to-do-a-screen-capture-with-a-mac/
