What is the secret of a successful business? Where is the golden key that will open up new opportunities for you? We are used to the fact that, working in the office, we must dress accordingly, that, while dining in a restaurant, you should not put your elbows on the table, and it is not recommended to put a maraphet in the nasal openings when talking. Everyone knows this, but at the same time, many do not think about elementary etiquette at work and do not adhere to generally accepted norms. This book will help everyone to determine the simplest “can” and “cannot” that we often encounter in the business sphere.