Linking Spreadsheets from google doc's

I’ve just taken over a volunteer position as webmaster. Its my first time using WordPress. Looks like you have lots of good documentation … but I don’t have time to read all this now.

Please tell me how to “unlink” and “link” spreadsheets.
FYI: The website has several spreadsheets in google.docs that allow people to access and work on. These spreadsheets are linked to the website and update after someone makes changes.

Thanks