Students taking undergraduate degrees in geography, ecology, earth science, and environmental science frequently take an introductory unit in Physical Geography.  Some will have not done any geography since their early teens, while others have more recent knowledge. This range of backgrounds can be challenging for both the instructor and the student, this primer aims to help. A primer is a readable introduction to a subject, more technical than a piece of popular science, but less detailed than a specialist textbook. It aims to give the reader a platform in a subject with which they may be unfamiliar, so that they can proceed simultaneously, or sequentially, to more advanced texts and information. Ideally the primer should have something for those without any knowledge, while also challenge and entertaining those who do. Not quite bedtime reading, but a step in that direction. Our Dynamic Earth introduces students to the Earth's origins, to plate tectonics, atmospheric and oceanographic circulation, as well as to a range of Earth surface processes. Idea to get you started in your studies.