I feel like he's be a very mature/responsible kind of computer-user... Not very hip or much for social media or anything. You open up his desktop and his web browser is the default one that came installed... he never felt the need to change it for his purposes. he's got a folder full of microsoft word documents he's used as a journal instead of having a blog he's posted anywhere. he doesnt want to publicize his thoughts or anything... just write them out, but he usually doesn't actually manage to get into deep introspection anyway.
on the internet i think he'd like to read history forums or other academic blogs... he might comment/post sometimes but his web presence is pretty vague and he doesnt have any personal information up anywhere. i feel like he might get into comment section arguments and type in perfect grammar and punctuation though... i'm not sure if he'd have some supernatural knowledge of world events of anything, but even if so, i think he'd like to see how people talk about them!