This document discusses open education principles and resources. It outlines key concepts in open education like open content, open teaching, and open access. It also defines and provides examples of open educational resources (OER) like learning objects, open textbooks, MOOCs, and open courseware. Examples of popular OER repositories and MOOC platforms are given. Trends in education like flipped classrooms, learning analytics, alternative credentialing, and competency-based learning that are accelerated by open education initiatives are explored.