What is internet or Worldwide Web?
The Internet connects personal computers, mainframes, cell phones, GPS units, music players, soda pop machines, car alarms, and even dog collars. All of these computer connections exist for the sake of free information sharing.
One of the greatest things about the Internet is that nobody really owns it. It is a global collection of networks, both big and small. These networks connect together in many different ways to form the single entity that we know as the Internet. In fact, the very name comes from this idea of interconnected networks.
Since its beginning in 1969, the Internet has grown from four host computer systems to tens of millions. However, just because nobody owns the Internet, it doesn’t mean it is not monitored and maintained in different ways. The Internet Society, a non-profit group established in 1992, oversees the formation of the policies and protocols that define how we use and interact with the Internet.
if you are not familiar with net work and packets see this video. Excellent video to know how internet works.