Hello, it is specially prepared for those who are new to billiard systems or those who will start. In the content of the book, the general usage details of the systems are explained in detail with pictures. You will get to know the systems more closely with detailed position descriptions. If you are already using the system and you have deficiencies, you can fix them with this book series. The book is easy and understandable systems are explained in plain language. In addition, the systems are specially sorted by taking into account the most common and upcoming positions in the game.