For each question you get the rationale for why the one answer is correct, and why the other answers are wrong.
I think it helped. The questions seemed to be similar to the ones on the actual test.
This one is kinda hidden on their website. I couldn't find it from any of their menus. The only way I found to to get to it (other than the direct link above) is to go to their website and do a search on 'aemt'.