Once you have your research goals and questions, you need to choose the best methods and tools to collect and analyze the data. Depending on your research objectives, you can use qualitative or quantitative methods, or a combination of both. Qualitative methods, such as interviews, observations, or usability tests, can help you understand the why and how of user behavior and feedback. Quantitative methods, such as surveys, analytics, or experiments, can help you measure the what and how much of user behavior and feedback. Also, plan how to recruit and segment your research participants, based on your target user personas, criteria, and sample size.