Do everybody knows how to use a fire extinguisher, when incident like this happen?

I asked this question because I remembered when I went on safety training to obtain driving licence inside work site: They teached us on driving a car w/ a certain speed limit, headlight on, checking the car daily before going to work site & MUST your car have a fire extinguisher. BUT when I raised my hand to ask how to use it? The instructor didn't answer me! eh!

So, honestly I dont know how to use it?