
An electrical storm over Nantucket island causes all electrical devices to cease function, and as some people band together, others are building armies for conquest.
As far as approaches: talk to people you know, understand their reading tastes, and get recommendations from them?
As far as specific reading suggestions for someone who I know nothing about other than that they like ASOIAF, maybe (though its very different) S.M. Stirling's novels of the Change (Dies the Fire and sequels.)
- Several large religions (Catholics, Mormons, certain Baptist conventions)
- Mexican drug cartels
- Several multinational corporations (though internal bureaucracies of many in F500 are stagnate and wouldn't respond quickly to a power vacuum)
- Certain sub-divisions of governments (in the US: states, large municipalities, military bases, land managers)
- Certain volunteer organizations, like Civilian Air Patrol, Girl/Boy Scouts
These organizations have strong hierarchy, clear incentive constructs to align to their mission, and can typically respond quickly to external opportunities.
Books like Dies the Fire by S.M. Stirling walk through sort of an uber-case of this kind of scenario from a scifi/fantasy perspective. And that another organization fills a void is not crazy -- we've seen it in history (Catholic -> Roman empire, post-American revolution, KKK and fraternal orders like Masons/Elks post-US civil war, several places in the Philippines, France, and others in response and following WWII occupation, and so forth).
Power is slippery. There is no divine right to it. People do well when it is held stably and respected for what it is. People do poorly when it is mismanaged, and will tend to support the strongest claim when there is a vacuum.
If something changed the physics of our planet so that all modern technology stopped working, such as in the Dies the Fire book, then although most humans would starve, the survivors would start over with a medieval society (plus being able to use the scraps from modern world). That's the fundamental difference.
A world run by machines could exist after us and continue or build it's own civilization, which presumably Skynet would be able to do if it had won. The Matrix is more mixed, because the machines need humans to satisfy a lot of their power needs.
