The document summarizes the author's experience using Twitter for professional learning and networking. It describes how the author began using Twitter in September 2013 and now follows 130 people. It provides examples of four influential educators the author follows - a biology teacher, the University of Alberta's Faculty of Education, Bill Nye, and a group focused on 21st century teaching. The author has found Twitter valuable for gaining resources, expanding their network, and connecting with experts in science and teaching.