A professional learning network (PLN) is a community of individuals around the world who are learning together. They can start out as strangers, people one couldn't pick out in a crowded room. But Twitter, the virtual meeting place where one's PLN comes together, helps these strangers come together to create a community built on communication and collaboration dedicated to making learning and education the best it can be. The first thing to know is that developing a PLN on Twitter takes a commitment--not necessarily a huge one, but it does take some time. It is a bit like starting a new friendship: One cultivates a relationship by chatting over coffee in the faculty room or sharing an anecdote in the hall. It is the kind of commitment that causes one to pause rather than walk on, and that's what it will take to develop and maintain a PLN using Twitter. In this article, the author discusses the steps in building a PLN through Twitter.