More like 40-80 slides per lecture in some classes, with 8-14 lectures per exam every 1.5-2 weeks for just one of several classes. Some classes are a lot less, but classes like anatomy, physiology, micro, etc. cover a ton of material. You prioritize the 5 credit science classes more than the 2 credit seminars. It sounds insane, but remember that dental school becomes your full time job, You don't lose 30 hours a week at work like you might right now. Fact is, you'll probably "work" more hours on school than you currently do at school+work, more of what is now free time will become study time. Should just naturally happen as long as you stay aware of how much material you still have to get through and how many times you want to review it in however many days before the test.
A lot of lectures build on each other, you'll often find that a few lectures in to a new unit, you don't really need to read the first 3 powerpoints again because you've just reviewed and added on as you go. Also, everyone you're with every day has the same classes and the same tests at the same time. It's easy to coordinate studying with others if that helps you.
I personally recommend you don't take notes at all (as in writing out the content of the lecture) because the powerpoints should already be your notes. Better to pay attention to what the lecturer highlights as important, if you even go to lectures. I modify powerpoints during lecture to clarify wording or add examples or highlight what might be a test question, but I type very little.
charlestweed is absolutely right about talking to upperclassmen, but definitely also be aware that things change from year to year. Test 2 could have been subjects C and D for them, but for you it's B and C just because the course schedule changed. Just cause D2s say test 2 was easier than test 1 doesn't mean you can study less, the course director may make it more difficult on purpose because the previous class had a really high average on that one test.
Probably already wrote too much, but honestly it mostly it comes down to time management. Study however you like as long as it works. If you want A's, just make sure you actually look at EVERYTHING at least once, hopefully twice, three or four times if you can, and be prepared to give up fun for studying sometimes. If you're fine getting B's and C's, you can loosen up a bit on that, but the brain has to review to retain, or it just thinks the stuff it saw once isn't important and dumps it.
