Final Project - What is a PLN?

This is for all those future EDM 310 students who get half way through the entire semester and still don't have a clue what a PLN is.  An easy concept once you get used to it, in fact you'll question how you ever thought you could be an educator without this knowledge.  But in the beginning, many of us struggled with wrapping our heads around this concept, so I hope this makes it a little easier.