In my experience not 1 person in 50 of people who "aren't computer people" will retain that information regardless of how much time you spend. I once worked with a guy who would come to me for everything from excel stuff to "help I can't find this email in my gmail account". I tried to stress to him that I had my own work to do (write code) but he whined that it would take me just a minute and it might take him 15 or more! This had been going on at least 5 times a day for months and so finally I angrily asked him what I couldn't do faster than him out of his tasks and why shouldn't I just do his job and get his paycheck too. The requests slowed down after that. Being the one technical person available is almost always a shit experience.