This document outlines a professional development course on digital citizenship called "Digital Citizenship 101". The course was created in Edmodo by teachers from elementary, middle, and high school levels to expose other teachers to free and easy PD on digital citizenship. It covers topics like digital natives, etiquette, connectivity, copyright, cyberbullying, social media, digital footprints, supervision, and curriculum resources. The goal is for teachers to learn about digital citizenship effectively so they can teach their students.