Get a geiger counter, get iodine tablets.
Be prepared for an em pulse. It'll ruin virtually all of your electronics including your geiger counter provided it's not in a radiotion shield box.
Stock pile water in mass, it's both a great radiation shield and your only source of water for atleast a year. Baracade all your doors and windows. Make sure no dust is capable of entering your home from the outside, as it'll be radioative and will kill you. Try to build a shelter under your home deep down, preferably somewhere with no obvious entrance. If you've done this correctly leave your doors unlocked so people assume your home is abandoned.
Get a gun learn to kill, not just fire the gun but to actively pop out someone's skull.
If your geiger counter goes too high kill yourself and your family asap.
You don't want you or anyone you care about going through that level of suffering.
Wait 6 months to a year, and move to a place where all the fall out has been flushed away by rain.
Learn about economics and farming, after the vast majority of people have died you'll have a large volume of idiots thinking they're living in the thunderdome.
Reality is you'll need every laborer you can get to farm food sans electronic and heavy machinery.
