I just took the NLN Pax-RN today and passed (thank god!). I'm in Illinois attempting to get into an ADN program for the Spring.
To prepare for it I used the National League for Nursing's Study Guide for RN Pre-Entrance Exam. I flipped through it a bit and then took most of the practice tests. Honestly, I was not very confident going into the actual test. I wasn't getting that great of results on the practice tests. However, just keep in mind that, for most schools, your raw scores don't matter. Most schools look at how well you did in comparison to everyone else.
I felt like I did okay on the verbal while taking it (English is definitely my strongest subject). The math portion made me nervous, and I ended up running out of time and guessed on maybe 5 questions at the end. Math is my typically my worst subject. The science portion was very difficult. When I was taking the test, I thought for sure that I was going to fail.
My scores: 94% composite percentile rank, 87% verbal percentile rank, 90% math percentile rank, & 88% science percentile rank.
I wish I had done better, but I'm just happy that I passed and can move on to dedicating my time/stress to something else!
As far as advice for each section, I don't really have any for the verbal portion. Either you will know the words or you won't. Like I said, English has always been my strongest suit and I did the worst on that part. Go figure. Math was mostly ratios, fractions, and percentages. Make sure you study those like crazy if you're not very confident with them. As far as science, the best thing to do is to know the formulas for converting temperature between Fahrenheit, Celsius, and Kelvin; and all the physics formulas that you'll find in any study guide.
Let me know if I can answer any other questions, because I was searching up and down online too for advice/wisdom/etc that could have helped me!