This book has been specially written to assist all potential driving instructors, who have made a decision to make an attempt at becoming a fully qualified DSA approved driving instructor. The main purpose of the book is to provide those of you who are just starting out, with all the theoretical knowledge which you will be required to learn, and to assist all of those who have found that there are gaps in their existing knowledge, with the information which you have been looking for, but have not been provided with. This book comprehensively covers all three parts of the qualifying examinations, with particular attention being made to the part three section, which causes the greatest difficulties for all examinees, out of the three parts of the qualifying process. Irrespective of whether you are just about to embark on a full course, or are already part of the way there, this book will provide you with the information which will in all probability, fill in the missing pieces, in the same manner as is required when you are having difficulty in completing a jigsaw puzzle. As a word of warning, this publication must not in any way be used as a substitute for first class practical training, with a fully qualified instructor trainer. It has been designed to provide you with the appropriate theoretical knowledge, which you will require to become familiar with, to enable you to be successful when you go forwards to sit your examinations.