The "Great German Exercise Book" is closely linked to the "Blue Grammar," the grammar theory book of the publisher, but it can certainly be used beautifully on its own. In each section of the grammar book, references are made to the corresponding exercises, and for each exercise in the "Great German Exercise Book," it is indicated which section of the grammar book is being practiced - synergy at its best! Additionally, the user of this book will find a direct reference to the learning levels (A1-A2, B1-B2, C1-C2) associated with each exercise. It is also important to note that each exercise corresponds to the specified vocabulary level. Just like the "German Grammar and Syntax," the "Great German Exercise Book" is a unique investment. If the book is purchased at the beginning of learning German, it will accompany the learner throughout their journey.