wikiHow - The How-To Manual That Anyone Can Write or Edit
I was playing the Da Vinci game, and decided to look around my Google personal home page. One of the panes that I installed was the "How To" section. The content comes from this web site.
There's a ton of cool information here. I learned how to make a bow and arrow, how to make water in the desert, how to grow cacti, and how to include Jack Dog in my wedding.
Because it's a wiki, anybody with an account can add an article or edit one.