The Interactive Glossary: Defining the Net

1. A collection of resources (Gopher, FTP, http, telnet, Usenet, WAIS, and others) that can be accessed via a web browser.

2. A collection of hypertext files available on web servers.

3. A set of specifications (protocols) that allows the transmission of web pages over the Internet.

You can think of the Web as a worldwide collection of text and multimedia files and other network services interconnected via a system of hypertext documents. Http (Hypertext Transfer Protocol) was created in 1990, at CERN, the European Particle Physics Laboratory in Geneva, Switzerland, as a means for sharing scientific data internationally, instantly, and inexpensively. With hypertext, a word or phrase can contain a link to other text. To achieve this, CERN developed a programming language called HTML, that allows you to easily link to other pages or network services on the Web.

See: Web Page and Website
Watch:The Animated Internet: How the Web Works