From http://sipseystreetirregulars.blogspot.com/2016/05/defensive-operations-in-urban-areas_15.html

…Hundreds of hours poring through information on the internet will not replicate actual training. The information I will push out will be from current and historical examples but not everything will translate to your situation. I will mainly be speaking to an audience interested in neighborhood or town defense. Smaller footprints like a farm or duplex will have its own challenges that stem mainly from the lack of available manpower.

Anything larger than population centers above 10,000 will have unique challenges that are bigger picture, but the fundamentals of defense remain. It is incumbent upon you to take the information, throw out what you do not need, adapt it to what you know, and then test it out. Testing as much as practical before you will need it is the resounding advantage that you have over everyone else. I wish you nothing but success in your journey to building a better citizen…