I am still fairly new to Mac. I like to take and edit photos. I did this a lot with my PC and can't quite figure out an equivalent process to what I'm used to. Here's how I used to organize my photos in folders and subfolders for example, Vacations>Hawaii>edits. And as for my working process on the photos, I'd open a folder to view photos, choose one and open with editing software, then "save as" so I could keep my original and edited copies. I'm getting frustrated because I can't figure out how to use iphoto to do what I need, but I know there has to be a good way to do this with Macs.