I just passed with Above Target in all domain areas, first try. I found the Head First Agile (Stellman/Greene) book to be a great refresher on the topics that are important to know, and their mock exam is more challenging than the actual questions, in my observation. Andy Crowe's PMI-ACP Exam prep book was also helpful, a "no fluff" easy read organized along the lines of the domain areas, and includes challenging mock exams (I used "Iteration 2" because that is all my public library had on the shelves- I see there is an Iteration 3 version out now which should be even better). Practice deciphering the scenarios- exam traps include four truthful choices but only one is the VERY best for the specific scenario posed in that particular question. Knowing the roles and appropriate corresponding ownership/action is helpful to break ties. Favor long-term/holistic beneficial outcomes, empowered teams, and agility applied in ways beyond textbook models. PrepCast's brain-dump-download sheet was good for review. Good Luck!