About 4 years ago I knew about blog and email. At that time, I just wrote and sent, nothing else. I didn't know about how to make my blog be more beautiful, to get more traffic, to sell online, etc.
Internet is wider than the real world. Yeah, that's true. In a real world, it takes a long time to go to library, to buy newspaper or magazine, to get lecture in a university, etc. However, just surfing on internet. I can read a large number of informations: tutorial, tips, article, and so many other else.
Even we can work online as like selling product, join paid to click, join google adsens, etc.
In my opinion, internet is more than just a school. We can gain so much knowledge and share our knowledge to others. We can make blogs, facebook, twitter, etc. and get more friends over the world.