If World Wide Web starts up in the same window that you typed Web, you have got the non-Xwindows version. Type q to quit Web, then see the detailed instructions on setting display before retrying the command web.
If you get error messages about trouble opening a window, see the detailed instructions on setting display before retrying the command web.
From the file menu of the World Wide Web window, select OPEN DOCUMENT and supply the document address
You should then see this document. Highlighted parts of the document are hypertext links. Click on them to see a related document. Click on the Go Back button to return to the previous document. You will be told more about World Wide Web later. But for now, you have enough to avoid needing a paper hard copy of any further parts of this Users Workbook. Even if you do have a hard copy, you should resist the temptation to use it. As the SLD software changes over time, only the World Wide Web view of this workbook will stay up to date.