1. Pilot your draft questionnaire. Invite critical comments.
2. Choose a sample (consider pros and cons or random sampling, random stratified sampling, sample biases etc)
2. Administer questionnaire and keep a log noting any problems (e.g. built-in selections when approaching people in the street)
how to record data (especially for open-ended questions)
4. Think of displaying the data — graphically? Descriptive statistics?