Hey man, the best study guides available are: Saunder's and Mosby's. Practice question wise i just found the kaplan question bank for nclex-pn ( it's a website) wich seems to be the closest i've seen to the actual nclex questions. Im also challenging the board and already failed the test once. ( i did not use any of the above) ...that's all the intel i have on it. Good luck and let me know if you find a better study guide.