I was doing practice exams from book 2 by accident. I realized this on Monday afternoon when I was finishing exam 3PM, question 88. I wanted to break something…They should have different colors or something… Stopped the test immediately and nailed out book 1 am/pm. i was pissed at first but hopefully its a good thing, except I have to do a 1/2 test the rest of the week after work. not sure if book 2 is that more difficult than book 1, at lest from doing one test in book 1.