Do you really want to write such a book? (Score 1)

I've tried to explain e-mail using the postoffice analogy, tried to tell about folders and files using paper folders and trees (that grow upside down) - I failed each time.

The baby-duck effect dictates that if one writes a letter "in Word", it's stored "in Word", since it it cannot be found back any other way (because of numerous other files in 'My Documents').
"So, what's this confusing stuff about trees you're telling me?".

"I can't see your mail when I open Eudora!"
"Did you click on 'check mail'?"
"My neighbor has Outlook - that works!"
(because Outlook checks all POP servers right after it's started)

"I can't mail that letter - there's no option to do that in Word"

Windows' users won't think about concepts, they just want to get things done. I imagine it will be very hard to get them to read any book, as that takes away from getting things done. And unfortunately Microsoft understood that better than anyone else.

Gnome and KDE are just learning that. It seems they're going the Microsoft way.

You need to make a choice: fight an up-hill battle teaching people concepts they do not want to learn or go with the flow and write yet another "practical computer" handbook.

It's because people like to drive a car without having to know where the oil-fill cap is. We're the mechanics - don't write that book for us.