This presentation presents the 4Q-Business Model Diamond as a visual platform that facilitates application of the Lean Startup Method. All tools in the Lean Startup Method relate to the 4Q-Business Model Diamond which provides a common language for learning, teaching, and applying tools of the Lean Startup Method as well as other business tools. In this presentation, the focus is on tools involving 1, 2, and 3_Question Molecules, for instance, WHO template, WHO-WHAT template, Problem-Solution Fitness, Golden (WHY-WHAT-HOW: WWH) Pyramid, and People-Problem-Solution (PPS) Molecule.