I've been prepping for part 1 for the last 4 weeks and this is what I've found so far: I found First Aid to be a good outline for studying, having a good overview of what topics you should cover as its organized in terms of the sections found on the actual exam. It is however very condensed and does not explain things well so its not good as a sole resource unless you already know everything. I supplemented this with kaplan dent essentials, a physiology text book and USMLE, along with internet search to cover the gaps.
For anatomy I used a specific head & neck anatomy book for the head and neck portions and then just internet for other parts where there were not good diagrams in First Aid.
Ive got a few weeks left here till I write so I'm just starting the decks to get another overview of the material again and will finish with tons of practice exams.
