Is there a review course for the test?
Although there is not an actual review course several options exist. Look under Practice/Prepare tab to download the free Certification Preparation Guide which offers sample test questions with answers and the option to pay to take the Online Practice Exam.
A "Nurse Practitioner Exam Review" was offered as an NKF Preconference option April 10, 2018. It included test construction, item review and audience response with exam question review and rationale. A similar presentation was given at ANNA's 2014 Fall Meeting (available via ANNA ProLibraries).