The best bet is to take an M2 Exit course!
I did my M2 Exit in 2008 and from what I can remember, this is what they tested on.
1. Shoulder checks when making a turn. When you make a left turn, you do a quick shoulder check over your left shoulder. Same for making a right turn.
2. Shoulder checks when coming to a stop. Once you put your foot down, look over your shoulder to see if any cars are coming behind you that might not be stopping.
3. Constant mirror checks, exaggerate your head movements.
4. Left-Right-Left checks through intersections.
5. Constant observation. Especially when passing entrance ways to parking lots, schools, etc. The instructor told me that they have about 10 entrance ways marked and they will check to see if we make an apparent observation at these drive ways. I missed three of them because I decided to look at the drive way on the left instead of the right. Those were my only errors.
6. Shoulder checks when making lane changes. I believe the correct procedure is, shoulder check, if empty, signal, shoulder check, merge, turn signal off.
7. Obviously your correct blocking lane is huge.
From what I remember, the course path was something like this. Exit the parking lot, through some residential streets, through some main streets with parking lot entrances, merge on to highway, lane change on high way, exit high way, more residential, then back to parking lot.
It was about 20 min and pretty easy!