In a similar vein:

Get a fire ladder if you're not living on the first floor

But seriously, learning to use a fire extinguisher needs to be emphasized more. I stopped a fire from becoming serious because I was trained to use a fire extinguisher and I put out the fire quickly. My partner didn't know what to do and she just handed the fire extinguisher to me. If she were there alone, the building could have burnt down. Or at minimum, all of our possessions could have been damaged.

It's easy to learn, but YOU NEED TO LEARN