After a very intense week of training and examinations recently, I have achieved Avid Media Composer 6 Certification in both User and Instructor categories.
For anyone wishing to become an Avid editor I would recommend checking out this certification. A good way of refreshing the skills.
Simon McGuire 
I would recommend learning short cuts and tool definitions. The tests are normally random various questions and differ each time.
The books you have will give u the basis and your own knowledge should stand for you.
S