You will need beside nursing experience to do those things (utilization review, triage, etc) and that experience comes from beside nursing. I will ultimately like to become a nurse educator at my workplace but each job posting says 3 or plus nursing experience. I plan on going back to school this fall and continue to working at the beside so by the time I am finished I will have 4-5 years or so of beside nursing experience. And about being nervous, everyone is while they are in nursing school or when they get that first job. I don't think those nerves ever go away during your first year as a new nurse on a unit but you become more comfortable and things will start to click more. Also about people not being nice, you will find these kinds of people at any type of job. What you have to do is stay positive and stay focused.