The British Sub-Aqua Club has been running instructor's courses for some years, and has developed its own methods and style. This book, published under their auspices, covers everything the diving instructor should know, from basic lessons in the pool, fault analysis and correction, surface lessons and underwater positioning to teaching in open water, from large or small boats, including planning, choice of site, safety, equipment, dry-runs and assessment of performance. The book also offers general guidelines on methods of learning and teaching techniques. There is a chapter on visual aids, including projectors and videos, and tips on giving formal lectures and conference presentations.