I admit that I didn't not go through this whole book. This book begins with a pre-test, and my use of the book ended in the first 8 questions of the pre-test. Five of the first 8 questions had major typos or errors in this book. The first question of the pre-test is not even possible to answer correctly because the answer choices given do not include the answer posted for the question in the back of the book. Other questions within the first 8 included major mistakes in units and typos in the numbers of constants. I would not trust this book to help you learn physics properly as typos and fundamental errors probably exist throughout if they can't even get their pre-test right. I returned this book after going through just 8 problems.