Here’s a site where people can sign up for a “lens”. Each lens is a page about a topic and the content is added to that page by the “lensmaster”. The site give you a bunch of tools for formatting and creating the content. As well, if your lens is popular, you get a share of the ad revenue and you actually get paid.
If you’re not sure about how to build a great lens, maybe you should attend SquidU (http://www.squidu.com/), a online elearning site that teaches you about how you can put your thoughts together.