Hello mmck ... welcome to allnurses.com!
I don't have any specific info for you as I work in the ER (A&E), but a year ago as a new grad I went directly into that specialty after very little exposure to the ER in school.
Being a brand-new nurse is nervewracking for the first several months, at the very least. Give yourself time, and be ready to "be a sponge" -- you won't be expected to have an in-depth knowledge of the specialty.
You could probably glean some helpful info from the OB/Gyne and Operating Room Nursing forums here at allnurses ... be sure to check them out.
Best of luck to you, and keep in touch to let us know how you're doing!