Where will I park my car?

Parking is in Lot 20  http://www.princeton.edu/transportation/Parking_Lots.pdf

From Washington Road: Follow Faculty Road west (turning left if coming from Route 1; right if coming from Nassau Street) to the traffic circle. Go a quarter of the way around the circle, and turn right onto Elm Drive. At the next traffic circle, go three quarters of the way around and follow the signs to Lot 20. DO NOT PARK IN THE GARAGE ON THE RIGHT, you will be ticketed.

Parking is free - but you must ask for a visitor permit at Check In and display that on your dashboard.

How do I get from Parking Lot 20 to campus?

It is a 7-10 minute walk from Lot 20 to campus.