Senior here

a few words of advice
Organize: time, materials, friends
Everything you learn now will be utilized in future classes, so if you just "remembered" it then you'll have a more difficult time in the future because they will assume that you "learned" it and won't recover old material. I'm currently in Critical care and the professor "skips" sections of the book saying, this is stuff you SHOULD already know. And it is all testable, so Pharm, Patho, Med/Surg, OB, Peds, Psych, Fundamentals, Assessment, etc..........are all fair game in Critical care.......so take the time to learn it now.
Which bring up the next point, if you have questions then ASK..........
now is the time for that, remember the number one priority is patient safety........now, later and always.
I could give you different strategies for dealing with the different classes but at this stage it's best not to give you too much to think about, you already have enough..........and it does get better, much better.