Wolverine Tower is a 10-story dark brick building across the street from the 777 Building.  It is also very close to Briarwood shopping mall.
Go to the back of the building (east side) and park in the area specified as "Visitor Parking."
Go into the ground level of the building past Human Resources and into the main building.
There are two different entrances to the Training Rooms, one main one is by Suite 18 and another one is by the four elevators.