>>9. How to change a flat tire

I've been teaching folks how to do this for decades.

The most common sticking point is that they think that they don't have the upper body strength to get a lug-nut off (mostly women). Here's the secret: put the wrench on the nut so that pushing the lever part down loosens the nut. (this will differ depending on the side of the vehicle you're on) Now put your foot on that lever and let your body weight work for you.