Thank you Adebambo. My advice is to read PMBOK well and try and actually understand it by following up the same chapter immediately with mastering Rita's book, version 8. That is Key. Then do the exercises from Rita's book after the chapter and see how you feel. Then do PREPCAST training and exercises which will give you a slightly different way of thinking (don't miss the explanations to quiz questions which is very good). That's the strategy I followed, although late. I used only Prepcast quiz/Exam). You will need to get the hang of each Knowledge Area, and to understand how it all ties up with Monitor and Control, AND Integrated Change Control. What happens where and what process gets control from those processes based on what happens. Know what takes place in what process. e.g do you know which process EVM takes place?. I did not.
I would concentrate on certain specifics and know key things in each knowledge area (risk and procurement) - E.g. Tools and Techniques for Quality or Inputs for Collect requirements in Scope. For e.g. 7 Tools and their principles and use in Quality, the phases of Tuckmans ladder in Dev Team and the type of Conflict resolution etc. The difference between corrective and preventive action, Quality Assurance and Quality Control. The exercises are key to doing that. Basically, you need to read Rita's book well and understand how she explains things and Cornelius' training material. Finally, read the question part carefully, and then look at the answers to choose from. Some questions require you to choose what the PM does FIRST or NEXT or which document he/she would need to find so and so. Good luck to you and plan it well. Give yourself time to read, time to understand, time to put it all together by which time you will be confident. Go back to the prep material and books as much as you need to.