Stepping Up to Supervisor

Don't know why I found this so sadly comic but at the cafe I frequent, I saw a middle-aged man with a double-chin doing a crossword puzzle in the Examiner (used to be a SF newspaper before it became a tabloid without the sensationalism - which makes it a deadwater journalism for junior-high level readers). The book he had been reading was entitled: Stepping Up to Supervisor, a guide for new supervisors.

One needs a guide for this? There are special "supervisor" skills that one must acquire in a book? Like crossing one's arms and furrowing one's brow? Was that in the chapter on Supervising Sternness?

What's next? 300-page How-to Guides on Taking Coffee Orders?