Yes was my first attempt. Yes, I followed prep guide, be sure to go through their rationales. And I also did the online predictor tests you can purchase off the CPNRE website. I honestly don't think theres much more You can really do than those. While going through the predictor tests and the prep guide I made myself notes as to what I thought I should review. Whether or not I got the answer wrong, based on whether or not I felt comfortable with that topic