The Internet is the largest computer network in the world. It links millions of smaller networks which are connected to each other by phone lines, cables, or wireless connections.
If your computer is connected to the Internet, it can help you to get information from other computers, send messages to a friend who lives far away, or do lots of other amazing things like hear a song, or watch a famous movie.
This is possible because when you log on to the Internet, you are given access to the other computers that are also connected.
Today, people rarely write letters- they send e-mails instead. Electronic mail or e-mail, is a method of using your computer to send messages to other people who are connected to the Internet via their computers. Your message is first delivered to a computer called the mail server.
From there, it is transferred through the net, until it reaches its destination Just as you need to know a person’s address to send a letter, you have to know a person’s e-mail address to send an e-mail.