Here are some resources that will help you understand the basic features of wikis and how they can be used for educational purposes.
Wiki Walk-Through This is a great interactive tour to help you develop an understand of some of the basic concepts of a wiki. This is a good site to share with teachers who have heard about wikis but don't know what they are.
For Teachers New to Wikis This gives a brief overview and many ideas for how you can use wikis in educational settings.
Wikis in Plain English A classic Lee LeFever video explaining wikis in his famous style!
Wiki Basics
Here are some resources that will help you understand the basic features of wikis and how they can be used for educational purposes.