Starting night shift in a Peds ER

I am a new grad that is starting night shift in the ED at my local Children's Hospital. I did my practicum at this hospital during day shift, but I have no experience working night shift. I am also worried about not feeling comfortable in the beginning. I know that my colleagues will be there to assist me, but it still is an unsettling feeling knowing that I'll be the newbie for the next few months. I'll be on my own in 3 months, which I am also worried about. I need suggestions, advice, etc about how to get used to night shift, as well as being the newbie.

Thank you!