Learn how to take screenshots without using a special program.
1. Open anything that you would like to take a snapshot of on your computer. This snapshot with be the same thing you see from your monitor. It is very useful for creating tutorials (ex. Adobe Photoshop).
2. On your keyboard, press the "Print Screen" button (This is right next to F12.)
3. Now open up paint or any graphics program and press Ctrl + V. The image should appear. Now you may edit it to your satisfaction. That's it.
Note: If you press Alt while pressing Print Screen, only the current window will be captured.