If you are an aspiring or beginner instructor, the ASA Aviation Instructor's Handbook is an essential piece of reading. The book for ground instructors, flight instructors, and aviation maintenance instructors was developed by the FAA in cooperation with the aviation industry to help explain the fundamentals of instructing and prepare you for the FAA Knowledge Exam.
Even experienced instructors, though, may find the book useful as a reference tool to improve their own training activities. Subjects include risk management and single-pilot resource management, human behavior, the learning process, effective communication, the teaching process, and much more.
Before you can teach others, you have to teach yourself. And this book can help.