We have a pretty sizeable basement that, with enough conditioning, would make a decent shelter. Live in NJ, which I think is just barely far enough from a big landmark like NYC that the blast wouldn't get to us, though the radiation prolly would (where'd that website go again?)
Depending on who our presidential nominees end up being, gonna have to convince the family to pour some money into the shelter. Need some sort of air-purifier, lots of candles, weapons (hard to get guns in stupid jersey but we got knives), books (including religious paraphernalia) and canned foodstuffs, not to mention covering the ceiling with more concrete instead of whatever wood/mesh that it currently has. It's underground and walled by concrete though, which is why it's a good start at least.
So knowing my area literally no one else woulda bothered, which means if the nuke is heading our way we'd have to pick and choose who would stay, since the basement is fairly limited in that respect. So there'd be several factors as to who would be allowed in; good genes (ifyknowwhatimsayin'), valuables, age/skills, and people who can be trusted. It'd start-up small, but my family's pretty handy; most of us are physically formidable, know how to use rifles, have some sort of martial arts training and can prepare food, not to mention my dad's a doctor and I should be doing an EMT course within the next year, so we'd be ahead of the pack in a lot of ways. Also have LOTS of books, which will essentially be the essence of all knowledge in the apocalypse. So we'd spend several months or even years playing board games, singing songs, and generally being bored and helpless until we'd even try to see what's going on outside, where we might try to rebuild and start up, probably making some sort of Apocalyptic-Judaism sect which includes looting and killing everything for the greater good while waiting for the Messiah and/or death. We'll probably have an end goal of rebuilding Jerusalem or something that we'll prepare decades for, finally setting up a boat to Israel to see what happened to our holy land before yelling, "You maniacs... YOU BLEW IT UP!"
The above is wishful thinking. Bottom line we'll prolly die out anyway within the first couple weeks due to radiation poisoning no matter how we prepare, but religiously whatever Messiahs coming should already be messianing at that point so it's a tossup.
Movie I'd recommend is a little-known animated film called "When The Wind Blows." Wasn't amazing or anything, but I remember liking it a lot for whatever reason.