How did you study for the NCLEX exam?
I did Kaplan, package included book, online quizzes and tests, and live classroom review. I passed. Some people do only one of those kinds of options and pass. What kind of a student are you? How do you learn best? Some people can do book after book after book and get nowhere, others use one review book at are fine. No one can tell you what your best system would be, only you will know that.