You can also purchase a practice exam on the same website where you register for the exam (it's called PEAT). I cannot post the link since I have under 5 posts so if you have trouble finding it, let me know. I found that this practice exam was a little easier than the exams that come with the Sullivan review book, as well as in the same format as the actual test.

As for studying, I relied on the Sullivan review book to find what topics I needed to read more about (from any of my PT text books or from current physical therapy journal articles).