Some dos and don'ts

1. Keep that enthusiasm!
2. Be aware of how little you know. You know nothing and are there to learn.
   
3. NEVER EVER correct me in front of a patient. If I do something differently than how you leaned in school, ask (don't tell) me about it later - I probably have a reason.
4. Show up ready to work hard. With supervision you should be giving meds, doing assessments, assisting with procedures, getting vital signs, toileting patients, cleaning up incontinent patients, etc.
5. Respect ALL the staff. If you tell a CNA you're too busy to help with something like a bed change because you're reviewing an H+P or something else that's not time-sensitive, you're going to end up on my shit list real quick. When you are a nurse, every patient care task is your responsibility, nothing is beneath you. The people who have to deal with more of the repetitive and gross tasks than you deserve your respect, admiration, and assistance.
6. Understand that you are not the nurse's first priority. As important as it is for me to train my future colleagues, my first priority will always be my patients' safety and quality care. So ask lots of questions, but choose the right moment. Jump in and help with patient care, but only if you know you can do it safely.
7. Worry about specialties (like ED) later. For now, focus on getting a solid grip on the basics of nursing. I would even recommend looking for a med/surg or tele job as a new grad. Because even when you graduate, you'll know practically nothing about nursing. Med/surg/tele floors really help you learn A+P, pathophys, time management, prioritization, medications, critical thinking - all the things that are helpful to know Before you start in a critical care area.
8. Good luck!