Learning to use a fire extinguisher. It's not hard, but not obvious either. And you don't want to have to figure it out on your own when you actually need it.

Learning to use a fire extinguisher. It's not hard, but not obvious either. And you don't want to have to figure it out on your own when you actually need it. I personally had a training course at work, but I guess you can also find videos on the internet.