Encyclopedia article explains what a uniform resource locator is and what the information in a URL means.
Those not sure what the World Wide Web really is can find out by perusing an encyclopedia article that explains it all.
1996 article from this computer-publishing resource explains how to get around the computer industry's proliferation of abbreviation.
Read a definition of the HTTP antecedent to file addresses on the Web. Find out how a Web browser requests files from servers.