I can vouch for the InDesign Secrets book — it was very helpful when I studied for the test. The Adobe exam guide is good, too. A few things to keep in mind, confidence and test-survival wise (my opinions only): 1. the test is very comprehensive, but the score required to pass is not super high (it may tell you somewhere on the website or the test guide). Most people use only a portion of INDD's capabilities, but they have to test you on a good cross-section of everything for the credential to be meaningful (that's my $0.02). Focus some of your studying on getting familiar with the parts you're *not* a power user in. 2. You may be used to creating beautiful documents and solving wicked tough problems, now practice answering multiple choice questions. It's a whole different mindset, so get comfortable with it before you walk into the exam room. 3. I dimly remember (check, don't take this on faith) that there may be some option to re-test if you don't pass the first time, you might call your local testing center and ask, if you think that would help you worry less. 4. I don't know if this would work for you, but I basically took every skill mentioned on the test prep booklet, figured out how to do it, and made a table with questions/prompts in the left-hand column and answers in the right, and reviewed it till I had it memorized. That was not enough to get me a brilliant high score, but I passed. 5. Long ago, I took the road test for my moped license with a half dozen Hells Angels looking guys. They were on Harleys, I was on a rooty-toot scooter and could barely make a left turn. I passed, and several of them didn't. why? I followed instructions. There's a lesson in there. 6. Darlin', if I could pass the ACE, you can pass the ACE. Good luck! I found it to be a great experience, both the stressed-out studying part and the celebrating after, and I bet you will, too.