Do secure all exits and entrances. Remember, the recently deceased also appear to suffer from major migraines and really don't appreciate bright, flickering lights either - keep those curtains closed!
Do ensure access to food and water for a prolonged period.
Do collect together any and all weapons in one place. Particularly, be sure and gather any household items that might also come in useful. For example, although not ideal, gardening shears could get you out of a spot of bother during close-range zombie shenanigans.
Do make adequate toilet arrangements. There is nothing worse than having your bowels emptied when you're trying to empty your bowels.
Do think about power supplies. Remember, the recently deceased don't care too much about your power needs and quite possibly won't be thinking about maintaining power stations.
Do stay put (if it is safe to do so).
Do stay quiet (noisy children and pets will only bring you trouble in the long-run; it might be time to think about ditching some of that "baggage").
Do remember to stock a good supply of TP - it's the basics we all forget!
_________________________________________________________________________________________
Don't tell all friends and relatives where you'll be in the event of an apocalypse; we already covered issues with the recently deceased remembering such details above.
Don't hole up in a shopping centre. Looks good on paper, but in reality, all those entrances, exits, creepy, dark stockrooms and glass atriums are just asking for trouble, particularly from freakishly fast running, spider-like zombies.
Don't play loud music unless absolutely necessary. See above for the recently deceaseds propensity towards heavy migraines and dislike of loud, bright things. Have some consideration. Imagine yourself on your worst ever hangover day.
Don't try reasoning with dead people. People generally aren't that reasonable, particularly when they're dead.
If you have to venture outside to replenish stocks, DON'T walk around with your mp3 player at full volume or try reading your latest kindle download (if you still have electricity with which to charge these items). You must have your wits about you at all times.
Don't leave cigarettes burning. Smoking kills, even during a zombie apocalypse.
And remember: Not sure they're dead? Off with the head.