Note that many resources can be accessed in a variety of ways. World Wide Web "browsers" (such as Netscape or Mosaic) are the easiest to use since they can access any resource denoted by a URL (i.e. telnet, gopher, ftp and the hypertext). In general, for sites with more than one access method, the web version is the place to start; those URLs begin with "http."
Since material on sites often moves, if you can't find it, you might have to search a bit for it.
If you're completely new to the Internet, I'd suggest that rather than just going by the above description, you also take a look at the sections titled "USEFUL BOOKS AND SOFTWARE FOR AND ABOUT THE INTERNET," and "USEFUL RESOURCES ABOUT THE INTERNET," and consult local guides.