OH, ATI ... got to love it! I recently graduated, and my school used ATI books as well. They suck, everybody hates them, bla bla bla... My best advice to you is to read the books on each area you are assigned (aka- cardiovascular- read cardiovascular in the ATI). These will not only help you prepare for end of semester cumulative tests, but ATI most importantly helps you with NCLEX. When I graduated I used the NCLEX ATI book to help me study (along with answering over 2,000 questions on a prepu site) and I was out in 45 minutes and only 75 questions- easy pass. ATI is annoying, but apparently it works (just get familiar with the book layout, and suffer through the stupid online tutorials).