I originally bought the prep book based on the 2002 nec and studied like crazy
I took every test I could find in the book and on line. I bought all the ref books that I could afford. I still got a 66 on my first attempt.
I bought a bunch more training books this time and work the tests out every night.
The Ga class 2 test (masters) LOVES transformer questions for some reason and that is my weakest point. If you are taking the restricted exam (class 1) you wont see any trans questions.
Download the canadate information booklet from the GA site and get all the ref books you can afford. This is a open book test, 2- 4hour sessions on paper.
I feel you WILL need the Ga construction book that is on the suggested ref list and I think it is only avail at the Engineers Book Store in Atl.
Send me a PM with your phone # and maybe I can discuss further
Chris