You'd need a gun (or some other form of weapon) for that, so youll need to learn how to shoot on top of survival skills. And probably how to hunt too - won't be able to go to the store and buy dinner.
A lot of people would gang up in an apocalypse so you'd personally only need one skill and somone would definitely teach you another (or have the other in general)
Uh huh... yeah. For the first twenty four hours... maybe thirty six if your lucky. Also, depending on the type of apocalypse, the internet may be the first thing to go.
Somewhere between slim and nanoscopic, humans have been worried about an impending doom that has never come for thousands of years, I've lost count how many times people have been scared of something happening and I'm only thirty!
computer stuff
Plus there's some people who want to be the cool " lone dog "