Well maybe I can help. I am a senior nursing student currently doing my practicum in the OR. I LOVE IT. Doing a practicum in the OR really helps to learn about the environment and personalities that work there.
The first few days and even weeks I spent shadowing my preceptor and just taking it all in. Sometimes I felt like I was in the way, but overall staff was very helpful and into teaching. So much is at stake when a person goes in for surgery, so don't expect to show up and start tossing things onto the sterile field and so on. First, you have to prove that you are competent and safe.
After shadowing and learning how the team operates, my preceptor started letting me get more hands on. I started to feel as a part of the team and less in the way! I can now (with her by my side of course) check in patients before surgery, prepare medications that will be needed, assist the anesthesiologist, assist with positioning the patient, prepping, placing F/C, and help the team with things they may need during the surgery, and so much more. There is so much to learn and things to take into consideration!
My advice is just to be as helpful as you can and always ASK if you can help/what you can do before you touch anything! Also, help with transferring patients, turning over rooms, etc... The OR is very team oriented, you will learn this early on. Keep a pocket note pad with you to take notes of things that you learn and things to look up later. Good luck!!