I took the exam 3 years ago. I studied with a co-worker for 3 months prior to the exam from the study guide that you can purchase from NAON. It is a difficult test but not as difficult as some would lead you to believe. I worked in the OR for 5 years doing Ortho and in a clinic setting for 3 years prior to testing. There were some very obscure questions that we as nurses don't deal alot with but study like you did for your boards and you'll be fine. There are a lot of herbal questions and alternative therapy questions but it was ok. Can't say I remember much of what we studied anyway now. You'll do great! :D:D