Whenever I’ve undetaken any research project there are five key questions that I consider in order to help me to define a research plan:

1. Objectives
What is the goal of the project and what are the key knowledge gaps that we need to consider?

2. Hypotheses 
What do we think we already understand about our users and how can we test and messure this?

3. Methods 
Based on the resources available, which methods would be most effective to select?

4. Conduct
What is the timeframe and how will we gather and collect data through the selected research methods?

5. Synthesize
What did the results conclude and are what are the new new design opportunities that we can explore?