If you are short on time and want to get ready, definitely get the PM PrepCast Combo of classes, formulas sheet, and exam simulator.
Then, try the following steps:
1. Watch all the 1.0, 2.0, 3.0, ... class for an overview of the content;
2. Read the Ethics document for PMP;
3. Take the evaluation exam from PM PrepCast to see where you are at;
4. What the classes on order and take not of potential questions and items that were not clear to you;
5. Download the free online (locked pdf) PMP Study Guide and just read there the items that you any doubt;
6. After you watch all the classes, read the formula sheet and do the simulation on formula (PrepCast material);
7. Take the PM PrepCast to see if you passed the course and have the Certification. If you pass, you are almost there;
8. Apply to that the real test, while you wait to be approved, start doing the Exam Simulation - if you are like me, you will do better here than in the Course Final Exam;
9. After passing on five Simulation Exams with a score above 80%, you are ready.
10. Schedule for an online test and nailed it. You will probably do better here than in the simulation ones.
Fear not, but study.
Watch the classes, take notes.
If something isn't clear, go to the PM Study Guide and ready that section.
All the best.