I'm still doing my Pre-Practical nursing prerequisites. I'm just curious to hear from different people what course they found to be the hardest and why? I'm not scared about the a&p or even the pharmacology, even though I know they will be hard. For some reason learning to take vitals signs seems to me like it's going to be crazy hard?! Maybe because I know nothing about how to do it, but it scares me that I won't "get it".