Most people I know never even read the book including me. I missed one question. If this is your 4th time taking it, it might be a foreshadowing outlook into the future. Maybe the bus, a friend, or even your parents would probably be a safer alternative solution. Not trying to be mean. Just saying.
In my opinion you could study with a partner. Have your partner quiz you that way you would know what you need to study more on. They also have books at the DMV that you could pick up. Usually the answers are at the back of the book. If the answers are not in the back of the book you could find the answers by reading the different sections.