I started as a new grad in the SICU back in July. The 3 most important things I have to pass on to you are:
1) ASK QUESTIONS! Don't ever be afraid it will make you sound like you don't know what you are talking about - it has the opposite effect, really. No one expects you to know everything - in fact, I've had several conversations recently about how nursing school
in no way prepared me for working in the ICU. Pretty much everything is going to seem new to you and that's ok!
2) Go at your own pace. I had a situation where I made a somewhat serious error because I was super rushed (my preceptor had me attempting to take on busy doubles during week 2 - bad idea!). Now if I feel rushed or that I don't have time to really think everything through, I make it known immediately. I'm not sure what yours will be, but my orientation is 20 weeks long so there's really no hurry. Take advantage of this time!
3) Be prepared to have bad days. I love my floor about 80% of the time. The other 20%, I feel like I have no idea what I'm doing, and want to go home and never come back. After talking with my other nursing friends - this is totally normal and hopefully these days will happen less and less often.
Good luck! I was intimidated before starting, but an ICU is really a great place for a new grad. The learning opportunities are constant and you will be surrounded by people who want to teach you. Enjoy it!