Anyone else just thinking… wtf

I have just been thinking… in two years am I really gonna know these lab values? Meds? Etc? How the hell am I going to be a nurse. Seems like the first week is already making me concerned for the rest of the program. I’m a good student, I’m just feeling really scared. Anyone else? Do I study with the book? ATI? Lecture? Ppt? It’s just so much all at once.