I passed in 75 questions. I find that 95% of what it takes to pass happens while in the nursing program, studying thoroughly every day and not cramming. Once you graduate, it's too late to learn content. You just have to do tons of nclex questions.
I wouldn't suggest Saunders for the questions because they're too easy. I used Kaplan and a bit of Lippincott. The most important thing is to take your time and review every single rationale. Sometimes I would spend 15-20 mins reviewing a single question's rationale, looking up the information and reading all about it until I understood why the answer was the correct one. I'd do this even if I got the question right. If I did 50 questions it would take me 30-40 mins to do the questions and 2-3 hours to review them.
Lippincott has a book that's entirely select all that apply questions, "Lippincott's NCLEX-RN Alternate-Format Questions." It helped me get over my fear of them. Remember if you're getting a lot of them on nclex it means you're doing well! About 1/3 of my nclex was alternative style but don't worry, they were actually pretty simple and straightforward, much easier than the ones in nursing school or kaplan.
In short, just buckle down and do tons of questions, and really review rationales. Put your powerpoints and books away, and do not review content unless it's in reference to a rationale. Also, do not wait too long to take it. Don't wait more than 2 months after graduation, preferably 4-6 weeks.
Best of luck to you, hope this helps :)