I used the PrepCast simulator, and the test questions in Rita's book exclusively. I choose these based on my research and the reviews of these products. If I ever got to a point on a topic that I was still not comfortable with or seemed to miss during test question, I would re-review the topic or even look to Youtube for a different point of view. I found the topic of EVM to be confusing at times. I looked on Youtube and found some very helpful explanations on the topic, the variations in presentation of the topic helped me grasp it better.
Good Luck in your studies.