Yes, it is nerve-racking but well worth it! It's not too hard if you apply yourself. Have you done any nursing work before (cna-cma)? The hardest part for most people is the math that is involved. As for what to expect, there is alot of reading, math, memorization, and of course documentation. But, like I said earlier if your committed, and willing to give 110% then you will do fine and it is certainly worth it.