The Purpose of a Literature Review is to gain an understanding of the existing research relevant to a particular topic or area of study and to present that knowledge in the form of a written report. Learning important concepts, and research methods will bring insights into the topic chosen. Ultimately, achieving a better understanding of a particular discipline and/or topic based upon the research findings.
Writing the Literature Review: Step-by-Step Tutorial for Graduate Students - David Taylor, University of Maryland, Collage Park
The Literature Review Part Two - David Taylor, University of Maryland, College Park