I use this site partially as a way to get to info I need from time to time repeatedly. Just a link is no good cause homepages come and go. Windows has a “Print Screen” key on the keyboard by default…
1. To capture the entire desktop screen, press Command + Shift + 3 (Apple key ⌘ + Shift + 3)
2. To copy the entire desktop screen, press Command + Control + Shift + 3 (Apple key ⌘ + Ctrl + Shift + 3). The entire screen shot will be sent to your clipboard.
3. To capture a portion of the desktop screen, press Command +Shift + 4 (Apple key ⌘ + Shift + 4). A cross-hair cursor will appear and now you can click and drag to capture the selected area . Once you release the mouse button, the selected screen shot will be saved as a picture file on your desktop.
4. To capture a specific application window, press Command + Shift + 4 (Apple key ⌘ + Shift + 4), the mouse cursor will change to symbol + . Now press the Spacebar. The cursor will change to a camera, and you can move it around the screen. Move the cursor over the window where you want to capture, click the mouse button and the screen shot will be saved as a PNG file on your desktop.