Actually IMHO the first thing everyone should consider is survival.
I'm sure there are Latter Day Saints on the forum who will attest to the fact that they have preparedness down to a fine art. Everyone should have at least 6-12 months of sustainable food supplies on hand. That includes water and comfort items. Human and pet food.
Just google their site and do research on their articles about preparedness.
Secondly, you can google 'what are my chances of surviving a nuclear war'. You should be able to find grafts that show you what your chances are wherever you live in the US. You can even find where there are nuclear launch sites in the US. Nope, it's no big secret.
Your metropolitan areas, military bases, launch sites will be prime targets. Pipe lines, shipping lanes. Think what would cause the most disruptions. That is what would be hit.
One of the things I've read in the past states that there would be a lot of survivors. Let's face it. Nobody winning a war isn't what humans fight wars over. The axis powers have been in a our nukes are bigger than yours peeing match since everyone got their hands on the A-Bomb plans. Nothing new under the sun. What has been done will be done.
I'm a bit curious about the prediction of a Carrington Event sized solar flare occurring in what was the year? 2025?My husband and I are HAM operators. Would love to see that data.
Finally, IF something bad was to happen, I fear that birds would be some of the first victims. Anybody besides me remember stories about canaries taken down into coal mines as gas detectors? Their systems are so sensitive they would be dropping like flies. Unfortunately, like it or not, chickens are birds.