1. Locate the Print Screen (sometimes abbreviated PrntScrn) button on your keyboard. It is typically to the right of all of the F keys.
  2. Click on the window that you would like to take a screenshot of.
  3. Press ALT+Print Screen.
  4. A screenshot of that window is now copied into memory. Paste into a new file, using an application such as Microsoft Word or Paint. 
  5. Save the file.
To take a screenshot of multiple windows, click Print Screen for the third step. This will copy an image of your entire screen into memory.