You should park in either the Maynard or Forest Avenue parking structures shown on the map at:   http://www.umma.umich.edu/visiting/parking.html

Look at the links at right for the Room Keycode List (needed to access many rooms on campus), the campus wifi logins for each debater and judge, and the campus map.  

Varsity will be based out of Mason with rooms in a half dozen other buildings.  Novice rounds will be in MLB and USB, except during round 1 when a few rounds will be in Mason and Chem.