This Delmar ASE A5 Brakes Test Preparation book helped me pass the ASE exam with room to spare. This should be used as a supplement to pass the exam not as your primary brakes textbook. The book has solid review material that is identical to the required knowledge outlines on the ASE website. There is fantastic information about ASE test question structure and how to go about giving yourself the best chance at answering each type of question you will encounter on test day. I don't quite want to say trick questions but they are tricky and thanks to this book I was calm and prepared for each type of question and knew how to go about attacking it most effectively. There are also 6 practice exams that have the same layout and question types as the real ASE exam as well as having an effective way to link back to which section a particular question was derived from. In other words if the ASE outline says 8 questions will be about disc brakes and 6 will be about drum brakes the same will be true on each of these practice exams. Since the answer key points you back to which section the information came from what I did was over about a 2 week period took all 6 practice exams and then totaled up all of my missed questions to see which sections of the outline I missed the most questions from. So I was able to clearly see almost 50% of my missed questions were relating to drum brakes so I knew my most effective thing to study would be drum brakes. I found the practice exams in this book to be a little harder than the real exam. I never scored better than 70% on these practice exams, I scored 84% on the real exam. Ive just started working with the Delmar Electrical ASE book and it seems just as effective. Great product and well worth the price.