Max Ayoob is awesome. Since you are clearly not familiar with him, go out and buy and read In the Gravest Extreme: The Role of the Firearm in Personal Protection. It’s a little old, so some of the weapons discussion has been superseded by events (automatics are much more common now, vs. revolvers), but the core information on legal and psychological aspects is just solid. A must read. Seriously, doing this will be one of your best uses of time this year.
https://www.amazon.com/Gravest-Extreme-Firearm-Personal-Protection/dp/0936279001
I'd like to amplify that. In the Gravest Extreme was published in 1980
Think that over for a few minutes.
Do you even remember 1980?
It's not just the weapons discussion that has changed since 1980. The legal climate has undergone a dramatic upheaval since then as well. In 1980, concealed carry was illegal or highly restricted throughout these United States. Castle Doctrine laws were rare to nonexistent. Most States held a legal duty to retreat. I don't have maps of Castle doctrine of Stand Your Ground ... the Concealed Carry map is instructive. I wish Mas Ayoob would update his book.