Relax and take in as much material as possible prior to testing. Take as many sample exams as you can to see where your weaknesses are, study those weak areas and retake the exam. Learn the material to use in the real world not just to pass the test, it will stick with you longer and easier.
Training for Project Management Professional (PMP)®, PMI Agile Certified Practitioner (PMI-ACP)®, and Certified Associate in Project Management (CAPM)®