*Some* of the information could be useful. A lot of it is outdated or was not useful even then.
Have you checked out this yet?
https://archive.org/details/usa-tm-31-210-improvised-munitions-handbook
It'll come in handy if the struggle becomes mass violence. If the struggle becomes mass violence, we've failed, but that's no reason not to survive, or to take a bunch of fash with us when we die. But better still would be if what ever we did to resist worked before the struggle becomes mass violence.
#CivilWar2 wouldn't be fought between states or regions. It would be fought between neighbors. It would be a bloodbath. It would also be America's national suicide. The world would pick our bones and we'd deserve it. A lot of people think we deserve it already.