The Internet is a huge network of computers spanning the lengths of this planet and is now started to bring in the surrounding area like space. Some computers share data like servers, others just surf the web as clients downloading the data. Public Internet began in the late 70's, but that's not what I'm going to teach you. In the 70's, web surfers used an interface called telnet, but now that program is mainly obsolete. Telnet is most widely deployed in accessing college email accounts. The Internet is very helpful because it's a huge database of knowledge, from the pictures...
Google. It is a very popular and informational network of sites created by two Stanford students. Type in whatever you want to search for in the form, and then press enter. You should get your results in the same window. After you get your results, look around in the window and choose whatever site best matches your query.

Congratulations! You now know how to use the Internet, and well on you're way to becoming an Internet guru. In conclusion, turn on your computer, open a web browser, type in the URL, and you've conquered the basics of the Internet.