I don't even start nursing school for another month, but I've been working in hospitals for 5 years and just want to say you need to really consider looking at your attitude. Not because some people on the internet are disagreeing with you, but because as a nurse you are going to be in the trenches with a bunch of people that know more than you, and you will end up in a lot of situations where you can learn how better to do something from coworkers or even from patients. They aren't all going to handle you with little kid gloves. Some are just going to tell you they think you should do it differently. You can take offense, like you seem prone to do, or you can ask how they would do it, and practice saying "thank you for the advice" even when you want to argue. Rubbing everyone the wrong way is going to make life difficult for you, and you might miss out on some gems of information. When I hear a bunch of people saying not to bother memorizing interactions, I would wonder how they deal with the issue. One poster mentioned what I would do, which is familiarize yourself with the facility's online drug compatibility tool. This frees you up to memorize other things like maybe more advanced patho or EKG interpretation or something. Dale Dubin's Rapid EKG Interpretation has kept me busy for awhile, and helps learn a lot about cardiology. Sorry such a long post, but I was bored and wanted to help out.
"Everyone you meet knows something you don't." -Bill Nye