Here are helpful items that I reference from the book.

• Two appendices: Appendix A - How Much Time and Money? and Appendix B - The Evolution of the Mental Model Technique
• Templates for Combing and Grouping data in Microsoft Word and Excel
• Python scripts for the PC and the Mac to generate the diagram from a template.
• Explanation of Six Sigma and how Voice of the Customer research relates to mental models.
• Introduction Letter to Interview Participant explaining the research project and format of the interview
• Introduction Letter to Interview Translator outlining the role you wish the translator to play during a foreign-language interview
• Moviegoer Recruiting Spreadsheet
• How to Listen to Interviews on Your iPod
• More on printing mental model diagrams, with real-life examples.

Here are some questions I've received.

• Does Tower Size Mean Something?
• Are Interviews The Only Way to Build a Mental Model?
• What Do I Ask During the Interviews?
• How Is Behavioral Audience Segmentation Different?