In this book we aim to share the knowledge, resources and research generated by the #Openteach project. The aim of the project was to create an evidence-based and open professional learning approach to support educators to teach online. Teaching online is different, in this book we explore this difference with the aim of supporting educators to develop their online teaching practice and knowledge of online pedagogy. The Covid-19 Pandemic has been a game changer for online education, impacting 1.5 billion students worldwide and thrusting the majority of schooling and higher education online (Bozkurt and et al. 2020). Additionally, the pandemic has thrust most higher education staff into teaching online, the majority without previous experience of this mode of education (Bozkart et. al., 2020; Farrell, 2020) However, teaching online requires different pedagogical approaches to traditional lecturing, therefore institutions need to support educators transitioning into online teaching to ensure quality (Gurley, 2019). Effective online teaching supports student engagement and success, this is key as online students are more vulnerable to attrition (Coker, 2018; Woodley & Simpson 2014). This book aims to address this need for professional learning opportunities for educators to upskill in the area of online teaching practice and pedagogy. The intended audience for the book is any educator interested in learning more about effective practice for teaching online and online pedagogy.