My biggest advice would be to study little and often. 10 minutes at a time, put it down and then review a little later. Memory comes with repetition so the more times you look at something will have a greater impact on your memory than trying to absorb a lot of information at once. Index cards work great and if you can review out loud with a study partner-even better! Mnemonics are another great way to help you recall information.
Good luck in your journey-I am sure you will be great- and welcome to nursing!