Don't use too many materials - that can get confusing! I recommend first of all studying throughout school, so you don't have to learn too many new things as you study. Get the Kaplan's question database - NCLEX format is the closest to Kaplan. Get the Uworld database for studying, their explanations are great, in fact I stopped using books because Uworld provided me with all the info regarding the questions. I opened the OB book a few times and read the highlighted info, peds milestones and developmental stuff, med.surg signs and symptoms of most common diseases. Other than that just did questions. Passed first time with 75 questions. Good luck!