Start where you are weakest, using both ATI (if you have them) and the Kaplan guide book. I started where I was weakest and worked from there. It's easy to see where you are weak with Kaplan because...
I took my NCLEX July 8th, and let me start by saying I passed it in 75 questions.... praise god! The days before I was on here scouring the site for how people were doing on they're Kaplan prep...