My ED orientation was about 3 months and my residency was 1 year. That being said, the residency program was hospital wide and cover basic pediatric stuff for all the new grads on the critical care side. My ED gave great didactic lectures on common illness seen in my ED. To be honest, most of my learning was on the floor and not in the classroom. But then again, I learn best when there's hands on involved. I finished my residency 4 years ago now. I'm actually speaking to the group of new grads that's finishing up their residency soon in my department.
No worries on all the question, that's why we all come to this forum. As far as tips... coffee? Lol~ There wasn't much I did outside of my residency. I thought about memorizing different dilutions for meds but it wasn't really needed. I felt like I had a leg up on all the other residents because of my previous experience as a Army Medic and working part time as a medical assistant while going to nursing school. Plus, I feel that the hiring process weeded out 99% of people that wouldn't cut it in the ED. Since I've been in this department, I've only seen 1 new grad that didn't make it through residency.
Ah, 1 good tip. Find a good mentor on your floor. It doesn't have to be your preceptor but someone that you look up to and has vast amounts of knowledge in the floor and in the nursing career. I hope this helps!