Essential skills?

I don't see "recompile the Linux kernel on your system" on this list. Or even "dual-boot a Windows machine with Linux."

Though both are a little hard to describe in the format given there.

Still, it's a list of useful skills and tools. Though it's oddly jumbled. (Why do "shine shoes" and "perform a perfect push-up" appear before "replace an electrical switch"? Why does "survive a tire blowout" show up in the middle of the series, but "jump start a car" show up at the end? Jump-starting is a much more common need than is surviving a blowout.)

Of the skills and tools listed, I think I've performed, or at least learned the rudiments of half of them. Most of the electrical, home-repair, or vehicle-related items I've learned from my father. A few others I've learned on my own.