Go to pmi.org and research PMP, CAPM and PMI-ACP credentials. How are these credentials different? What are the requirements for sitting for the exams for these certifications? What does it cost to take the examination? What is the main content (in brief) of the certification? Summarize key elements of the certifications in a table. How does a person prepare for PMI certification exams? Share two methods of preparing for PMI exams and what they cost.