Cumulative Study Hours: It varied a lot per day for me, just because some days were hard to concentrate and others I hit the books very hard. I studied for seven weeks very well.
Recommended Studying Materials: Decks, Implant Notes, Refer to your texts or class notes to review. (I also used Kaplan Test Center Prep, Mosby, Released Exams...not sure how much it helped? I do think the Kap Qbank helps you learn basic concepts.)
Most Difficult topics to answer: I think it varies for everyone...
Study DOs: Stay calm and believe in yourself. You have gotten this far on your own and will do the same again. Sleep well before the exam so you have stamina and are clear headed the day of. Also review the topics you know you are weak in. Don't underestimate this exam--you have to get a lot of Q's correct to pass.
Study DON'Ts: In my opinion, don't go too far off topic in Path. Know the ones they test over and over very well.
I was originally going to wait to share my experience since I am waiting on my scores. Best of luck to all! And when you are done with your exams, please update SDN with your experience for others as a thank you to the ones who have helped you.