Can you provide additional details on what you're struggling with? Have you reviewed the correct answers from the exams and understand the reasoning? I have used Rita Mulachy's book in the past to help understand the concepts. If it is available to you it's a great additional resource. In my view Quality Management is all about figuring out what the quality requirements are and how they can be met, verifying quality processes to ensure you'll have high quality deliverables, and controlling quality to execute your quality management plan.
Kyle