I finally have put order into the mess
- fiction/literature books go to box.com
- personal docs to main google drive account
- educational books (manuals, courses, piano scores
) go to one google drive account
- dropbox and onedrive - to be filled later with backup fiction collection
odrive client is kinda nice, but messes up gdocx and gsheex files on google docs (which I do know they are not "real" documents but a kind of links to the "real" documents... I have no idea where are those, fact is that moving around gdocx and gsheets files using odrive has made a few of them inoperable)