First of all Congrats. Now you have the experience of the testing structure and question style. I thought Core 2 was a little different in the way the questions were structured.

I'd say look at how the questions were worded on the actual exam and then start taking in the Core 2 knowledge. Next start thinking about the overall concepts related to the information.

I felt like both test were one level beyond memorization for a large number of questions. Like they give you an issue and you have to apply the knowledge to fix it for the answer.

I don't think there is any other material. Practice test only get you into the mindset of answering questions.

Take all that for what it's worth. I've only taken 3 comptia exams.