Here are some pointers to help you prepare for the PSM certification: Read the Scrum guide. Whenever you have a tricky question, you can refer to it. It is 16 pages long and can help clear up the Scrum concepts. Take the Open Assessments provided from the Scrum.org until you are able to get 100% in all the tests. You can also take the Product Owner open assessment that will prepare you to solve complex questions that might be asked during the exam. Search for a professional Scrum community and join it. You will be able to find explanations for any questions that you might have. Check out the discussions on Scrum.org. Take a paid Scrum Master training from KnowledgeHut. They will help you with any confusing or difficult questions that you might have.