It can be helpful to read an encyclopedia article on your topic to get some background, concepts, keywords, etc. Many encyclopedias also have bibliographies at the end of articles which can start you off on your research. Not every topic may be represented in an encyclopedia, but if they are, it can be a good starting point.
Ana E. Van Gulick, Ph.D.
Research Liaison to Psychology and BrainHub
Department of Psychology
Center for the Neural Basis of Cognition
Carnegie Mellon University
Hunt Library 410