This revision guide has been written to address the content of units AS 1 and AS 2 of the revised (2016 onwards) Physics specification for CCEA. It is designed to support the textbook, Physics for CCEA AS Level 2nd Edition, by providing students with a consistent approach to the subject throughout the course and as they prepare for their examinations. The chapters follow the outline of the CCEA specification, providing a summary of the key learning points, exercises and examination-style questions, with answers included. The book has been subject to a quality assurance check by an independent Physics expert.