This document provides an overview of primary marketing research. It discusses what marketing and marketing research are, and the challenges of turning raw data into meaningful information. It outlines the types of data that can be collected - facts, perceptions, behaviors - and potential sources of error. Good research elicits understanding of target populations' thoughts and respects respondents' time. The document also discusses study objectives, typical marketing issues studied, limitations of data collection methods, and considerations for online research methods.