A wiki is a website which allows people to add, modify, or delete the content via a web browser. Wikis use specialized wiki software and are usually created collaboratively. The content is typically non-linear - but you can create structures for via links and categories. To find relevant content the search function is very important.
As with any software, there are lots of options, and often many ways to accomplish the same task. This series of pages is designed to help you find what you need, and contribute your expertise to our knowledge-base.
As always, if you need help, don't hesitate to ask others for assistance.
Key Help Topics: