This document discusses communities of practice and how Web 2.0 tools can help find, organize, evaluate, and share knowledge within communities of practice. It outlines the key characteristics of communities of practice as having a shared domain of interest, a community that facilitates member interaction, and shared practices that members contribute to and learn from. The document encourages readers to reflect on whether they are part of a community of practice and how students and teachers could utilize communities of practice. It then provides examples of Web 2.0 tools that can support each step of finding, organizing, evaluating and sharing knowledge within a community of practice.