The very concept of doomsteading involves coping with the absence of civil authority and trained professionals.
I'm going to detail what has worked for us. Many of the things covered in this book may not be up to code or in accordance with statutes in some jurisdictions. Others may be inherently dangerous for some people in certain situations. Use some common sense, and don't get in over your head. Proceed at your own risk. (Don't at your own peril.)
Natural Selection is still a thing.
And, as Granny used to say: "If you break your fool neck, don't come runnin' to me!"