This monograph, now in its 2nd edition with 31 new chapters and significant updates, is the first book of its kind written specifically for graduate students and clinicians. The monograph is based on the 4-volume treatise, Handbook of the Cerebellum and Cerebellar Disorders (Springer, 2013; 2nd edition: 2022), the definitive reference for scientists and neurologists in the field of cerebellar neurobiology and related areas. There have been fundamental advances in the basic science and clinical neurology of the cerebellum and its role in sensorimotor function and cognition. Essentials of the Cerebellum and Cerebellar Disorders makes this large and expanding body of knowledge readily accessible to trainees and clinicians alike. It is organized into easy to read and short chapters that are ideal for students and clinicians. The most common cerebellar disorders encountered in the clinic are covered.