I have been a member of The Legal Defense Network ever since they started. They send you DVD’s that go through scenarios on what you should do when the “what if “ ever happens. Mossad Ayoob has been very involved with putting this together. I believe it costs $150.00 a year, cheap insurance.
https://www.armedcitizensnetwork.org/
I had a pop-up show up the other night about some 20-hour DVD on combat gun use (Conceal Carry University). It sounded like it might have some good info, but also sounded boring.
The above link to the group you mentioned sounds like a better investment for the same amount of money. Instruction PLUS legal help.
Good advice. Ayoob is great. There are several insurance sources. Just like a car, you hope like crazy you never need it. Your screwed if you do and don’t have it. You never know enough. The best one you ever have is the one your never in.