HTML was developed in the 1960's by IBM to create a way for users to navigate through online documentation. A computer protocol refers to the rules for making something happen so HyperText Transfer Protocol are the rules for accomplishing the transfer of hypertext from one computer to another. You're using HTTP most of the time when you click on an HTML Web page link. Hypertext is text with embedded links that allow the reader to choose a link and then be transferred to whatever that link points to. Hypertext is written in the HTML language and uses HTTP to perform the linking.
Hypermedia is the same thing as hypertext except that it includes text, images, sound, and motion.
Thus, hypermedia includes all types of media. The Information Superhighway is a term coined by vice-president Al Gore in the early 1990's when he called for all classrooms and libraries to be connected to a vast network by the year 2000. Our highways are a mess, Mr. Gore. The Internet is very difficult to define. Let's just say that it is a worldwide network of computers which is used to help people communicate.