Sometimes it is useful to get an overview of a topic before starting your research. Here are two good starting points:
CQ Researcher in the news/controversial issues, each weeky report covers one topic in depth. 20-year archive
Gale Virtual Reference Library online collection of dozens of encyclopedias, handbooks, and guides. From this site you can search by key word, subject and other ways. Click on "Title List" to see a master list of all the reference works included, such as Encyclopedia of Social Theory, Encyclopedia of Sociology, 21st Century Sociology: a Reference Handbook, and many others.