This chapter discusses conducting a literature review for research. It outlines the key steps: searching existing literature in your area of study using books, journals and databases; reviewing and critically analyzing the selected literature; developing a theoretical framework that organizes themes and issues; and developing a conceptual framework that focuses on one aspect for your study. An example theoretical framework on the relationship between mortality and fertility is provided. The chapter emphasizes that a literature review establishes the background for your research, refines your methodology, and helps contextualize your findings within existing knowledge.