This document discusses community of practices and learning through case studies. It begins with introducing the concept of community of practices and how knowledge is shared within and between communities. It then presents a case study of Meghanwas village in Haryana where a community initiative to save water through awareness campaigns led to knowledge sharing within the village and neighboring villages adopting similar practices. The document further discusses elements, types, models and spread of knowledge in community of practices using the example of Sidhbari village in Himachal Pradesh where self-help groups engage in livelihood, health, and economic activities through knowledge sharing within and collaboration with outside organizations.