I took it a couple weeks ago. There were some shockingly detailed questions on what I felt was really random ****. It's 20 questions; you get an hour and need 70% to pass. I only studied a few days and passed with lots of room to spare, but there were definitely some tense moments and some guessing.
When you register they'll send you the book pdf or a link to it. If you haven't already done it, the registration process is kind of a pain involving faxing your payment and other info. You can't schedule the test on the website, only by phone.
In addition to the book, there's also a cd with a lecture given years ago by some psychologists involved with ethics stuff. My understanding is that it's a free resource, so if you pm me your email address, I'll send it to you, assuming I can figure out how to compress the files. I listened to that a few times on my commute and read the accompanying notes a couple times maybe. I skimmed the actual book and maybe could have read it with more attention to have a more relaxing test experience. Bottom line is passing tho. To provide context, I'm historically a minimum-effort good text taker with wicked low anxiety.