i just recently took the pax rn earlier this month. i studied the nl review guide. however i did get my book in january and i began studying in january. i would study and take the practice tests here and there. i waited until the week before i was scheduled to take the test and then i started doing the comprehensive tests and timing myself. i tried to make sure i scored above average which is around the 120's. fortunately, i scored a 135 for my composite score and my overall percentile score was 94. so if you prepare yourself you too can do quite well!!! good luck!!!