Hi Connie Bai,
I'm inclined to agree with Ahmed's recommendation that you watch all the videos. There were little nuggets of information that I found helpful in the long run. However, if you are short on time, I would go ahead and just watch the overview videos, as Andre mentioned, and if you don't pass the first time, you can review and retake it. The test is multiple choice and is very straightforward. If you decide to take the shortcut to pass the test for 35 contact hours,I would recommend that you go back and view all the videos as you prep for the PMP exam. Best of luck!