This document discusses communities of practice in formal and informal education. It mentions that communities provide resources and networks for teachers. It also lists some tools used by teacher communities, including hashtags, Twitter chats with specific hashtags like #UKedChat and #SLTChat, blogs, and people like @teknoteacher. It encourages exploring teacher communities through a smart networked device, getting on Twitter, finding others, reading blogs, attending events, and using hashtags to get involved.