Personal Learning Network, or PLN, is a term I first learned on Twitter in 2010. It is essentially a network of people from whom you can learn. Whether you're looking to learn about a subject area, teaching academic courses, or providing employee training, a PLN is a valuable tool. For the purposes of this post, I'm focusing on online PLNs, but they can extend into the physical world. Online PLNs are organic, on-demand solutions to learning. They are resource-rich environment