Please dress respectfully for court, whether you're a defendant, observer, juror, whatever. You don't have to wear a suit, but don't wear shorts, tank tops, or flip-flops either.
This building is really 2 buildings with a breezeway connecting. D 23 & 24 are in the basement in the newer (east) side. Take elevators near metal down. D25-41 also east. D42-54 are west (old) side.
Go to the right after you pass the metal detectors. There's an awesome espresso cart after you pass through the breezeway between the old and new buildings.