The Internet is a global system of interconnected computer systems that use the standard Internet Protocol Suite (TCP/IP) to link some billion devices universal. It is a network of networks that consists of masses of private, public, academic, business, and government networks of local to worldwide measure, linked by a broad array of electronic, wireless, and optical networking technologies. For example, you may use a modem and dial a local number to connect to an Internet Service Provider (ISP). At work, you may be part of a local area network (LAN), but you most likely still connect to the Internet using an ISP that your company has contracted with. When you connect to your ISP, you become part of their network. The ISP may then connect to a larger network and become part of their network. The Internet is simply a network of networks.
When you connect to the network, the router gives you a IP-address which it uses to identify your computer so it can send data to it in the form of packets. The Internet transports a broad range of information resources and services, such as the inter-linked hypertext documents and applications of the World Wide Web (WWW) which I will talk about later on in this website.