This document discusses how to construct a personal, professional learning network (PLN) online. It defines a PLN as a network of professionals where knowledge is shared. It highlights benefits like expanding horizons through more perspectives. It provides recommendations for where to start like Twitter and Ning, and how to find more educators by searching topics, seeing who others follow, and following favorite bloggers. It offers tips for joining conversations without fear, starting conversations by asking questions or sharing links, and keeping up using tools like Twitter Lists, TweetDeck, and URL shorteners.