Here for information about permission to reprint this document on paper . The Internet is a global network of computers.
Any computer connected to the Internet can communicate with any other computer on the Internet.
The Internet is neither a single computer nor even a single service. Think of it like a world-wide highway system. You can get from any highway to any other highway, though not necessarily via a direct route. The Internet has rules, called protocols that determine how data gets from one connected computer to another. It was designed as a decentralized network so that it couldn't be knocked out by a single nuclear attack.