Hi there BostonRN, preparing to take the exam the end of this month. I did purchase the book you had referenced and I had also purchased the exam questions you mentioned before I had read your post. I did find the book very easy to read but once I started the exam questions I felt very unprepared because I did not think the book was in anyway detailed enough compared to the practice exam questions. Did you also feel that that was the case? The questions regarding coefficients and variables are a true concern since that is definitely not one of my strong points. Any tips or suggestions?