I had a laminated book of about 8 pages of grid paper. I also had a fine tip marker so I was able to write everything down on one page just as easy as I could with a pen and paper. I think this can vary so just be aware of that. Also, they do no allow you to erase anything so you have to raise your hand to have the test monitor erase for you which would get annoying if you did no have the same setup as I did.
You're given a laminated sheet and a sharpie or dry erase marker. In my instance it was an almost clean laminated sheet and a well-worn mashed marker. I didn't bother with the "brain dump" but was able to scrawl the math problems on the sheet like a kindergartner using a "fatty" pencil writing their name for the first time.
Not much. After reading each chapter in the Andy Crowe book, I would skim the PMBOK for any discrepancies. There were very few so I did not review the PMBOK at all after skimming each chapter and I did not even look at the glossary. I felt I got enough of the vocabulary from the PrepCast lessons and Crowe's book and the glossary would have overwhelmed me and taken time away from learning the PMI concept as a whole.
Training for Project Management Professional (PMP)®, PMI Agile Certified Practitioner (PMI-ACP)®, and Certified Associate in Project Management (CAPM)®