The document discusses building a customer development plan through conducting interviews. It provides guidance on what questions to ask customers to understand problems, needs, and opportunities. Examples of questions are provided. The document emphasizes iterative learning - summarizing after a few interviews to assess what is working and not working about the interview process. It also stresses the importance of talking to multiple customers to identify trends rather than relying on individual anecdotes. The goal is to learn enough about customer needs to build an initial product before further validation.