1. How to put chains on the car.
1(a). Remember to tighten the chains and apply the chain tensioner to keep the chains tight on the tires. Otherwise something happens called "throwing a chain", which causes all kinds of unhappiness, especially when the throw chain gets wrapped around the axle.
Luckily, the chain didn't get wrapped badly around the axle, and came off very easily when I laid down in the snow to get under the car and take the wrapped chain off.