my advice is dont dwell on the questions and try too hard to find another answer...go quickly and read the question carefully..carefully...when i took it its not so much about knowledge as about strategy. just dont dwell on questions it will make you lose focus.
I didn't study at all. I did for a whole year. That's enough. I didn't buy any books for the semesters either. I just took notes in the lecture. I think that the quicker you take it, the better. Don't give money to study corporations. I took the NCLEX a couple of days after grad and passed at 75. You can do it just like the final in school.