Sprint (Jake Knapp)
Sprint: How to Solve Big Problems and Test New Ideas in Just Five Days (Jake Knapp, John Zeratsky, Braden Kowitz) - Sprints help you fast forward to the future and see customers react sooner - The longer you wait, it becomes increasingly harder to change products - Your product is never “ready” - but a sprint-mindset helps you make time-based releases (instead of feature-based).