Instructions for Screenshots:
If you want the entire screen, Press the Printscreen key.
If you want just the tab you are looking at, then press both Alt and Print screen.
That saves the image the windows clipboard. You have two options from here.
1) Paste it onto a Word document, which then you can use the screenshot as part of your document.
2) Open up Paint or similar program. Then paste and save it under the title you want as a .BMP image.
I had to do a lot training manuals for my students at work. That knowledge came in handy.....