I know what you are thinking; make a career on the internet, are you kidding me? No, I'm not joking around at all. YouTube is a fantastic way to make a living. However, you must be someone who doesn't care if they are exposed on the internet.
You also have to be very funny, and interesting. Your audience has to be wanting more, every time they see you. Although, building up a giant fan base will take time, in the long run it can be very beneficial.
To make money on YouTube you first must become a partner. To become a partner you have to have a few thousand subscribers, and thousands watching your videos. This may seem difficult to attain, but if people like your material then you can get views easily. When you become a partner you usually get 2-5$ per 1000 views.
This may not seem like much, but if you are getting 2 million views it adds up fast! You also can make money off of Google AdSense advertisements that people can click on while watching your videos.
Some very successful YouTubers are SxePhil, NigaHiga, WHATHEBUCKSHOW, Fred, ShaneDawsonTv and many more. These individuals have made a fortune off of YouTube. By this I mean a very comfortable living. Some of these members have made anywhere from 500 000$ to over 1 000 000$! Fred Figglehorn a.k.a. Lucas Cruikshank is the most successful YouTuber, he has made over 1 million dollars and he is only 16 years old! My point is that if you want to become a YouTube star and make a living entertaining people you can! With hard work, and patience you can be well on your way to a great living. However, I must stress that you don't put your whole life into YouTube, have a backup plan that you can always fall back on.