This document provides guidance on developing an idea into a product. It outlines exercises to define problems, create elevator pitches, identify customer personas, map out user journeys, and prioritize key features. The goal is to take an initial idea and develop it into a fully formed product definition through a process of problem definition, customer focus, and feature prioritization. Key steps include writing problem statements, creating product and founder elevator pitches, defining customer personas, mapping user journeys, and scrubbing the feature list into must-have, should-have, and nice-to-have categories. Following this process is intended to develop an initial idea into a validated product ready for development.