In this book all the grammatical topics from Level A1 to Level B1 are explained in detail. But this book is not just a grammar book. This is a complete program for learning German. With the help of this book, it is possible to learn German language in an effective way, because in addition to explaining the rules of grammar, other important elements of language learning, such as the necessary vocabulary and how to enlarge vocabulary more easily and almost, have been explained in this book. From this point of view, this book is completely different from others conventional grammar books and is perfectly suited to meet the actual needs of students.