I remember years ago I setup a XFCE desktop on my Arch Linux to my mom, since I was tired to fixing the problems that my PC got every time she wanted to use it.
I just explained: this is "the internet" (Firefox), this is Word (OpenOffice.org Writter), this is Excel (OpenOffice.org Calc), everything else you can come to me and ask (I lived with her).
This did reduce the number of reinstallations I had to do, and I don't remember she ever asking for some actual problem (mostly some basic questions).
Nowadays she only uses her smartphone and it is much easier to avoid problems. Since she doesn't blind install apps before asking me if they're safe too, her smartphone is clean.
I just explained: this is "the internet" (Firefox), this is Word (OpenOffice.org Writter), this is Excel (OpenOffice.org Calc), everything else you can come to me and ask (I lived with her).
This did reduce the number of reinstallations I had to do, and I don't remember she ever asking for some actual problem (mostly some basic questions).
Nowadays she only uses her smartphone and it is much easier to avoid problems. Since she doesn't blind install apps before asking me if they're safe too, her smartphone is clean.