I just joined Allnurses today and this is my first time in the forums. I wish I would have had an opportunity to give you study advice before your OCN exam! I tested in October and although I passed....it could have gone either way and I was not sure I made it until I saw the PASS after I submitted my test. Sweaty palms, rapid heart beat, and some big mind blanks here sums up my general anxious state for the entire exam. The OCN test prep booklets are the best resource. Practice practice practice with this book and also the online practice tests. Some are free. My plan B (if I did not pass) would have been to take the ONS review course or if available, an actual sit down 2 to 3 day review. Thankfully I was able to pull it off!