Shadowing CRNA

Hi everyone
I have posted some things on this board before under a different username. I changed it because it was my real name. Anyway I have been an RN for 14 yrs. Nine in a SICU and the last five as a flight nurse with a hospital based program. I'm interested in nurse anesthesia. My brother is a CRNA and I have watched and learned alot of things from him over the past 7 years. I have an ADN and I'm in school finishing my BSN. Because of my years of expirence the SON or one of the facullty has let me do a 3 credit elective shadowing a CRNA. They have given me some objevtives and course assignments but alot of the learning will have do be done on my own. It will be at the hospital where my brother works so I think the staff will be receptive to me. I think I will be doing 24-36 clinical hours with them. My question to all you SRNA's and CRNA's out there. What things should I do to prepare? What book shoould I read? What kind of questions should I ask. Thanks, Montegue