Here's an unusual article seen at Debian-Administration.org: A story of how to setup a computer for your old dad!
Read it here
My father had never used a computer when I gave him his. He had never worked in an office environment or used a typewriter. Like many people his age his eyesight is not perfect even when corrected, and his glasses are bifocal which does make using a VDU more awkward than normal.
My plan for the computer was to configure it with the smallest set of software necessary to make it function correctly, to greatly simplify the desktop, and to select a visual design that would be clear and unambiguous.