A friend of mine, not so computer literate, asked me for help with iPhoto, but I have no experience with the app so I can't really help him. He has several folders of photos on his old iMac 2009 24", running Snow Leopard, and is updating to a new 27" iMac 2012, due to arrive soon. All of his photos are imported from a Canon camera using software provided by Canon. After setting up the new iMac, what is the best way to import those photo's and ensure that iPhoto manages all of them from one location? ie. Would it be best to connect a USB drive with the photos on it, and 1. have iPhoto open the photos? or 2. copy the photos to the new iMac first? Does iPhoto copy files opened in it and can the (old) copied files be deleted? Any help appreciated.