Animal Magnetism has some common misconceptions about firearms and self-defense. He knows of what he speaks
Here is an example
Don’t ever fire a warning shot.
Daffy old Uncle Joe Biden’s advice on the topic notwithstanding, this is a bad idea. For one thing, you may well be guilty of negligent discharge of a firearm. But more to the point, if things are bad enough that you have produced a firearm to deter a threat, if you are called upon to fire your first shot should be center mass. Shoot to stop the threat; a shot in the air does nothing to that end
Go read it all. Firearm ownership comes with tremendous responsibility. How you exercise that responsibility can mean life or death.