The book is a collection of ready-to-implement tools to structure and manage the challenges and exploit opportunities of sustainability and transitions. The goal is twofold: improving the understanding of a challenge by going deeper, broader and by improving the quality of the discussions and conversations around the problem among participants. It focuses not only on the problem-solving process but also on the learning process while designing and implementing solutions. The tools are presented in a simple and visual approach to support practitioners’ every-day work on climate change, transition, and system innovation.