A picture is worth a thousand words, and sometimes when you want to tell someone about something on your computer screen, it's much simpler to show it than to tell it. That's what the "screenshot" function is for on computers. When you take a screenshot, the computer takes a "picture" of exactly what's on your screen at that moment, with the exception that it removes your mouse cursor. Taking a screenshot of a webpage is a very simple process.
Navigate to the webpage of which you want to take a screenshot.
Scroll up or down until you find the right place for taking the screenshot.
Press the key labeled "Prt Scr" on your keyboard or, if you prefer, press and hold the "Alt" key and then press the "Prt Scr" key. The former takes a picture of everything on your display, and the latter takes a picture of only the web browser. The "Prt Scr" key is above the "Insert" key, which itself is above the directional arrows.