In my experience, don't. Offer them your best solution for a novice user, which for me is usually an up-to-date machine with an ad blocker, and make sure that you're open for
Ultimately, they're adults, and the last thing your father will want is to be treated like a child on his own machine. If he fucks something up, fix it, and tell him what he can do to not have that issue come up again.
Ultimately, they're adults, and the last thing your father will want is to be treated like a child on his own machine. If he fucks something up, fix it, and tell him what he can do to not have that issue come up again.