In some ways, I have it easier when it comes to organization. I can only "upload" 12, 24, or 36 pictures at a time
When I scan a roll of film, I save the pictures in their own folder, labeled by date and film type. Those folders are organized by camera type. So, I've got one file for each type of camera I have, and inside those folders are the rolls I took with that camera. It can sometimes be tricky to find a picture after time has passed, but usually I just have to remember what I was shooting and then go look in that folder. I can usually do that pretty quickly.
When the pictures are unedited, they are named by whatever the scanning program automatically names them (usually some combination numbers). When I open them in Corel to edit them, I save a copy under a different name, so when I see file with an actual word name, I know that I have edited it. If I ever want to re-edit starting from scratch, I still have the original unedited scan.