This book breaks down efficient learning methods from three aspects: how to improve self-control, nine memory improvement techniques, and how to cultivate the ability to think deeply. From short-term pleasure addiction, delayed gratification, mini-habits, expectation management, timely rewards, Gantt charts and other methods, you can design a learning method that is more interesting and more suitable for you; and then explains in depth the clear goals, framework first, details later, memory creation, situational memory, homophonic memory, using mind maps to build knowledge networks, scientific review, full-sensory stimulation, and enhanced Memory training methods such as standardized output are used to improve the efficiency of learning from the perspective of improving memory; and then analyzed from the perspective of efficient thinking: repeated questioning, supplementing the knowledge into aspects, from input to output, commonly used thinking models, multiple brainstorming, how to read extracurricular books, etc. To deepen the core of the learning path - thinking, so that readers can learn to learn efficiently in a trinity.