Taxis are easily available from Detroit Metro Airport to Ann Arbor. Some options (NOTE: we don't have enough knowledge of these services to recommend one in particular):
We have had good experiences with:
The following hotels offer shuttles around town once you are in Ann Arbor:
Campus buses run regularly between North Campus and Central Campus. They are free for all to ride. Ask the driver if you are unsure about whether the bus is going where you want. This page gives detailed information about buses, but might be hard to follow.
The following map shows the main route between North and Central Campuses.
These two static maps below show the primary bus stops on North Campus closest to the Workshop location, and the primary destination on Central Campus, which is the CC Little Bus Stop. Buses stop regularly where you see the red circles. CC Little Bus Stop is a main hub.