The document discusses the history and workings of the World Wide Web. It was invented in 1989 by Tim Berners-Lee at CERN as a system of interlinked hypertext documents accessed via the internet. The Web consists of web pages containing text, images, videos and multimedia that can be viewed through a web browser and connected through hyperlinks using URLs. Users can navigate between web pages through these hyperlinks to access the web's collection of interconnected information resources available on the internet.