Hi Geeta,
- Pmbok Guide
- Rita Mulcahy's PMP Exam Prep Book
- 1'400 Questions from the PMP Exam Simulator
Approach: Read Rita's book. Skip the exercises. After each chapter, check the PMBok to see if there are other things or more detailed explanations. Look at the inputs, tools and outputs/updates. If you don't understand and remember everything at the beginning, don't worry, it will be easier later when you see the big picture. Do Rita's quizzes at the end of each chapter. Work your way through the whole book this way.
Then do all 1'400 of the simulator. Look closely at the ones you did wrong. You don't need to take a full exam. 10-100 question blocks will do just fine. When you have gone through the 1'400 questions and you are slowly moving towards the exam, do the questions you got wrong again and see if you do better.
Approach the exam in a relaxed manner. Accept that you will receive many questions where you are not sure of the answer. Try to get the right answer by using the exclusion procedure. Make use of the strikethrough and highlight method. Search for small hints in the questions and answers. And if you can't decide quickly on a question, mark and skip it and come back later.
This was my method, which worked great for me. Good luck!