I read the PMP Exam Prep book by Rita Mulcahy and portions of the PMBOK. Generally, I listened to the Podcasts for a knowledge area, then read the associated chapter in her book to reinforce. I referenced the PMBOK when I would review answers to sample questions which I got wrong during practice tests.
I only spent about five minutes doing the "brain dump". I only wrote down the basic formulas I had memorized. I found during my practice tests that this wasn't an important technique for me. With that said, I know that many people advocate taking 15 minutes or longer to really write all things down in case they get nervous later in the test. My advice is to take some practice tests and see what helps you. I was able to answer all questions in three hours. I spent the last hour reviewing my answers.
At the center I took the exam, I was able to take a break at any time. I had to leave the testing room and sign out. I was not allowed to leave the building. I was allowed to go into my locker but not reference any written material. You can eat a snack if you brought something. I was allowed to use a rest room. You are not allowed to bring anything into the testing room other than your identification card and locker key. They gave me two pencils, some paper and a calculator.