Just downloaded GIMP and already have an oddity.
I try to open a photo.
'Open Image' shows all the directories on C: and Z: (backup disc) including all photos -
Except the directory I actually want to use. C:\ tony-photos. ( File explorer shows it is still there.)
It can open the photos it can see, even photoshop .psd

Then I need to find out how to open Canon RAW files (.CR2)

to Gimp Chat tonyhoward20

To open RAW files directly you'll need GIMP UFRaw or dcraw plug-ins. UFRaw (based on dcraw) has a more full featured UI, but not the most recent base code. dcraw is better for quick import of RAW photos needing minimal RAW adjustment, has better file support & great for command line use. These two plug-ins are fine for quick import, using a stand-alone full featured RAW processor beforehand IMHO is the best choice. The Canon RAW software that came with your camera is a good place to start or try, Darktable, Photoflow or RawTherapee.

I'm not sure why you can't see your folder.

Thanks, I'll try one of those.
All directories have the same permissions