Wikipedia is a good place to start the research process, but a bad place to end it.
Why doesn't your instructor want you to use Wikipedia for research?
This does not, however, mean you can't look at Wikipedia at all!
Here is how Wikipedia can be useful:
Before using any resources mentioned in Wikipedia, use your evaluation skills to make sure they are appropriate!
Domain name suffixes often give clues on the reliability of information found on websites. Educational and government sites are generally the most suitable for scholars and students.
Major domain name suffixes include: