This book is especially for entrepreneurs who want to understand sales. It doesn't matter at what stage you are, just started your business or have been developing it for several years. The book provides for all stages of development and each of them has its own section: the 1 part of the book tells about the stage of business formation and what the owner needs to do in terms of sales. 2 part tells you what to do when your business is back on its feet and is developing successfully. How do you constantly increase your sales and at the same time spend a minimum of time and effort on it. The tips given in the book have been repeatedly tested in practice not only by the author, but also by other businessmen who have built systemic sales in their business. Must be read and must be used!