All of your documents (drivers license, passport, pilot license, medical cert, FCC license), I'm not sure about logbooks, but bring them just in case.

A notebook is a good idea, leave the laptop at the hotel.

For training attire- Collared shirts (polo shirts, button down shirts) no t-shirts. Khakis or casual dress pants. Jeans are ok if they aren't all torn up. Decent dress shoes, or clean sneakers are ok.