The PrepCast exam Simulator is a great tool and I highly recommend using it! The key for me was reviewing the explanation of the answers post practice exams. If I had to do it again, I would follow the advice of many others, take the practice exam on Saturday and then review the answers during the week. Repeat that process until you are confident in you abilities to understand the questions and complete the exam in the four hours.
Training for Project Management Professional (PMP)®, PMI Agile Certified Practitioner (PMI-ACP)®, and Certified Associate in Project Management (CAPM)®