This document discusses different types of online learning communities and tools that can be used to create them. It describes the history of communities and their purpose in sharing knowledge. Blended and eLearning communities are identified as two main types. Synchronous tools like chat, web conferencing, and video conferencing allow for real-time discussion, while asynchronous tools like email, blogs, and forums allow participation at different times. Factors to consider in design, development, and implementation of online communities are also outlined.