I am posting about this one because I can't believe how little time the author spends on firearms.
He states, "I do not recommend the use of firearms for self defense if you have received extensive professional training from the military or law enforcement."
He goes on to recommend, reluctantly, .38 revolvers and shotguns only. He spends a total of 2 pages out of 343 of this book on firearms. He even treads out the cliche of the chambering a round as a deterrence sound. Screw that. The first and last sound an intruder should hear is his head exploding.
I totally disagree with this guy. So does the military and law enforcement apparently.
I believe Glocks and ARs are the way to go. There is a place for revolvers and shotguns as well as sniper rifles and .22s and even pellet guns.
--The book has a lot of good concepts. Harvest that stuff. Look elsewhere for firearms recommendations.