Slightly more up to date than 1979, the Swedish government recently produced and sent to all residents a "in case of crisis or war" guide that includes a bunch of helpful tips on how to be prepared in case of crisis, and is very concise and easy to read:
https://rib.msb.se/filer/pdf/30874.pdf (some Sweden-specifics, like about all the civil defence shelters being available everywhere, but most things are generic and global advice)