The Klimek books are very helpful, however, Klimek is in it for one reason and one reason only, THE MONEY!!! After failing the test I have sent numerous emails trying to get into the next available review course. Because I was told that I could retake the course as many times as I liked, I believed that I could simply send an email requesting to be in the next review, this is not the case!! On my first attempt to email him, I quickly realized that the email address provided doesnt go to him but rather his secretary. She informed me that she would get back with me to let me know if there were any spaces in the next review. After that review had come and gone I attempted to send her another request for the next review, now that review has come and gone and still I have heard nothing. My advice to you is to copy the Klimek books from a friend and to take the Kaplan (money back guaranteed). This way if you fall into the 10% that doesnt pass the first time you are still covered.