When your learning the basic networking concepts for computers today you have to first start with the URL. The URL is sent over the network to a server, that translate the URL to an address. The address of the URL is known as the IP Address. The IP address is normally an numeric number. Then the the computer's routers will send a message over the network to connect with the computer or
. computers your trying to network with. When the message is sent to the server, the server send the message in HTML format back to your computer and that's the concept. You can find more information here: Key_Concepts_in_Computer_Networking.htm