If you ever find yourself in a zombie apocalypse there are a few basic survival skills you should know. First you should know how to sneak around. Zombies are often drawn in by the slightest sound.
Knowing this, learning how to be stealthy would be beneficial for any potential survivor. Usually the quietest way to sneak around is crouch walking or just walking very slowly. Running will generate noise and alert nearby zombies.
Even if you have a weapon this isn't always a wise idea. Remember playing hide and seek as a kid? This teaches a very useful part of stealth- being able to hide efficiently could mean the difference between you living, and being zombie food. A proficient hider can hold out for as long as they need to.
Also being able to shut up would be an amazing skill to have. If you ramble on and on, you may end up become food quick, or being sacrificed for the good of the group. If you're in a group that is.
Another skill includes learning to control your bladder. Being a zombie apocalypse, going to the bathroom is going to become an increasingly dangerous task. If going in a public bathroom, make sure to check all stalls, and then lock the door if possible. Bathrooms, such as ones in private residence may be a lot easier to use safely.
Restrooms also give the possibility of keeping up with personal hygiene. It's important to keep up with personal hygiene while holding out.
Next is learning to get rid of picky food habits. You will be forced to eat what's available or starve during a zombie apocalypse.
Remember to ration the food, when you find it so it lasts for as long as it possibly can. Stockpiling it is always a good idea. Even if you have to eat once a day, it will help you to survive longer. Keep in mind that only the zombies food source is usually the easiest to obtain where as survivors have a harder time.
Also learn how to operate efficiently on low amounts of sleep. Sleep can be very dangerous, as you are very vulnerable during sleep and can easily be eaten.
Next learn how to use a blunt weapon or a gun efficiently. Remember the only way to kill a zombie is destroying the brain or removing the brain. It is unwise to practice marksmanship during a zombie apocalypse, for you never know when you will need that ammo.