This document discusses primary and secondary research methods, as well as quantitative and qualitative research. It lists interviews, surveys, questionnaires, focus groups, observation, and internet research as common primary research methods. It also lists library and archive research as secondary methods. For quantitative research it lists graphs, factual data, questionnaires, pie charts and numerical data, while qualitative research methods include interviews, open questions, analysis of existing products, and personal preferences gathered through experiments.