The document provides tips for product managers to get engineers to build what they want in 3 main points:
1. Involve engineers as early as possible to develop a shared understanding of the problem and build relationships.
2. Work asynchronously and use tools like asynchronous messaging to discuss ideas and make decisions without blocking work.
3. Tell stories and provide context about user needs through techniques like customer interviews, but avoid giving too many implementation details, focusing on the what rather than the why.