Sheriff Jim Wilson
posted list of 6 books that he recommends for defensice handgunner. Since he is an old man, some are from a long days ago, but fundamentals are still the same.
Quick or Dead(Cassidy)
Principles of Personal Defense(Cooper)
Shooting to Live(Fairbairn and Sykes)
Kill or Get Killed(Applegate)
No Second Place Winner(Jordan)
Hilarious High Jinks & Dangerous Assignments(Echols)
From: Shooting Illustrated