I want to start making flash games and posting them to websites, read for more info?

Thats really good at the age of 13 you can post your games and everything else at the site given in my sources. And you can get upto $5 per 5 games. You dont need any contract sort of a thing contact the webmasters of that site by giving your info at the CUSTOM SOFTWARES section of this site. Enjoy a great future ahead.