This is now available through out the world by a network called Internet. The aim is to transfer data between several universities using different routes to prevent loss of data. To use more than one route had an important advantage. If you use one way to transfer your data, any break in that way would mean no data transfer. The flexibility and capacity of ARPAnet brought the development of various protocols and networks which can be connected with each other and form the Internet.
Internet is communication.
At this moment there are more than 50.000.000 computers connected to the net and at your home you can access all the data provided by these millions of computers. The only problem is you need a main computer which will provide you to reach the backbone of the Internet. Internet is not a company, authority, foundation etc. Everyone can access and use Internet as far as the services provided are not limited. You have a post office box with an address in your main server.