Now that you know some more about how Wikipedia works, it's a good idea to think about how to use Wikipedia appropriately for college-level research.
The best ways to use Wikipedia (or other neutral sources, such as the Encyclopedia Britannica or the Gale Virtual Reference Library) are for looking up people, organizations, events or sources you're not familiar with.
For example, if you stumble across the DSM-IV as a reference for your paper on ADHD, you may not know what kind of information the DSM-IV provides or how it is used in psychology and other social science fields. Looking up an unknown source in a neutral reference source can help give you some of this background information.
Also, if you use Wikipedia, you can consult the discussion pages to see what controversies might surround your source and what alternative sources other communities might prefer.