Also, sorry to double post, but failing at 75 is slightly alarming. I would read a review book as well and review the basics.
The NCLEX asks questions in a similar manner, and once you get the theory behind the way they ask the questions it will be easier to pick the right answer. You start to get a sense of what the right answer is (even if you don't know the answer) after answering so many test prep questions.
I would reach out to your school as well. My school used ATI, and they had a class you can take if you failed the NCLEX the first time. Try to find resources from the connections you already have. Good luck!!