Summary

A literature review is a summary, analysis and synthesis of the scientific literature on a particular topic.
Start by working out the focus of your literature review and getting a broad idea about the topic.
Look for 'hot topics' in recent reviews and editorials of quality journals to help you come up with a research question.
Examine the topic from different points of view.
Identify the main keywords in your research topic and think of synonyms you can use.
Keep track of information as you go. Use a reference management tool such as RefWorks, Mendeley, Zotero, etc.
Remember to reference- be accurate and consistent.