Best advice I can give is to know about the cancers - especially if you know what type of cancer the person you're shadowing is an expert at. Oncologists seem to love asking about staging - and also the techniques used to stage cancers. It might be a good idea to show up the Friday before you start so you can get an idea about what cases will be seen. Make sure you tell them this is your first experience with radiation oncology so they give you somebasics about toys they have in the department. Also, if you're rotating through Ohio State, it might be a good idea to make sure you meet the people in the department and get some face-recognition. THey interviewed 30 people last year for onely one spot. So if they know you coming into the interview, it's probably a big advantage. Anyways, good luck.