There is a new video on the MacTricksAndTips video channel. It goes back to something a bit more basic, screenshots. Screenshot functionality on the Mac OS X system is far more advance than the window counterparts. This is a basic video that explains the methods of taking full screen screenshots and shots of selected parts of the image. It also goes into taking screenshots of applications windows. The final part of the video is a brief discussion on copying these images to the clipboard.
You can watch the video below, if you cannot view it for any reason you can watch it directly on YouTube. It is Command + Shift + 3 for fullscreen and Command + Shift + 4 for a selection window. If you want to get the latest videos subscribe.