This document defines and provides examples of different types of research methods, including primary research, secondary research, quantitative research, qualitative research, market research, and objective vs. subjective research. It discusses the advantages and disadvantages of each method. For example, it notes that primary research allows you to gather customized information through methods like interviews and focus groups, but it can take a long time, while secondary research provides existing information without needing to generate new data, but the information may be difficult to find.