So you know, how to make invisible ink. Complement with the grown-up history of invisible ink and pre-Internet privacy hacking.
From the essential-life-skills-you-don’t-appreciate-until-you-need-them department: How to remove a fish hook from your finger
“This video will break all those books for normal book reading, because it is concerned not with how to read a book but with how to read all the books…. Thus consider this video a supreme aid to university-related keyboard mashing.”
Also see how to talk about books you haven’t read.
Bill “Science Guy” Nye teaches you how to tie a bow tie.
So you know, how to correctly add milk to your coffee.