This is a book about how to learn. The author Bajiao (Chen Lixian) has nearly 20 years of training experience. Teacher Bajiao has long been focused on the field of adult learning and development, and has always been rooted in the booming business soil of Internet companies. The core of the book shares the GREAT deep learning method independently copyrighted by the author. In addition to sharing this method, the book is also supplemented by a large number of classic learning theories, corporate and individual learning cases. At the same time, the author also hand-drawn a large number of illustrations, which makes the book more interesting and readable. This book can not only help individuals improve learning effects, but also help trainers design learning projects, and also help organizations build an efficient and sustainable learning culture.