Email

I have always stuck to my theory that if something to do with computers isn't obvious then it's probably not worth learning, because if you wait around for a while then someone will come up with a easier way of doing it.

One thing I did take the trouble to find out how to do was the 'out of office' email auto-reply. When my SMT took to emailing staff in the evenings and at weekends with requests for this and that, I naively assumed that nobody in their right mind would bother replying to them, only to discover that many of the staff, especially the younger ones, grumbled but then simply did what they were asked.

This idea that staff should be contactable 24/7 is now becoming increasingly commonplace and it's even more frightening that some people accept it. If you haven't done so already, learn how to use auto-reply before it's too late. (There's always one even if the IT nerd denies it)