The effort required is too much to justify when a softer option - nagging the husband is available. In my wife's case, there had to be a compelling reason to learn the software, read the manual, otherwise she simply shows no interest. There are times that I will read a manual. Particularly when I have invested a large sum. I would never ever read the manual for a rental car before driving off.
Luckily cars are pretty easy to use.
The variations are minimal. I would consider calling support on a single-usage piece of software. In fact on several websites recently I've had to do just such a thing. Trying to Force RTFM Good support costs. Big companies have found this out the hard way.