PLN stands for personal learning network, which is how teachers learn through online networking with others who they engage and exchange information with. A PLN has traditionally included friends, family, and coworkers, but now also includes online communities through platforms like Twitter, Pinterest, Facebook, blogs, and more. PLNs are important for teachers because they provide access to global expertise, questions, ideas, resources, lessons, news, and technology for the classroom. To become part of a PLN, one should look at available sites, join communities, ask and answer questions, and share and comment on others' posts.