title: How do I make a collaborative information system? (like stackoverflow, only simpler)
body: <p>I'm planning on making a self-moderated site where people ca share specific information on tons of items. It will be as following:</p>
  
  <ol>
  <li><p>If the item a site visitor is looking for isn't available, he can create it. Registration is not needed. Other visitors would help correct his item name if it's invalid.</p></li>
  <li><p>Visitors can add information to an item that other visitors could correct.</p></li>
  </ol>
  
  <p>And that's basically it. </p>
  
  <p>My question is: What do I need to learn (or use) to implement such system? any good reading resources for example? I've never done this before, and have no idea where to start.</p>
  
  <p>A wikipedia-like system won't work. I'm trying to code something that is extremely simple and accessible for everyone to use.</p>
  
  <p>I'm using PHP with CodeIgniter framework. </p>
  
  <p>Appreciate your help :)</p>