Avoided heavily populated areas. If the zombies can spread their virus, curse or disease, a densely populated area will be more of a breeding ground than a safe haven. On the other hand, avoid being totally isolated, in case you have to face a horde of undead yourself. You want a moderately populated area that affords quick exits and good protection
Learn to defend yourself. Shooting and hacking with a bladed weapon will come in handy. If you're lucky, the living dead will go down with shots to the head. Don't waste bullets on body shots, as they will prove ineffective. Rely on cutting with a sword, large knife or machete so you can save ammo.
Beware of your fellow survivors. Sometimes, they may be the biggest threat to your survival. Other humans who want your supplies or who have lost their minds in the disaster could try to kill you. Never let everyone know about all of your supplies, and never let your guard down completely. If someone is acting mysterious or weird, consider leaving immediately.
Your first instinct when the news of a zombie uprising breaks will be to get the hell out of town – after all, the countryside is less populated than big cities and will be easier for survival. This is fine, but if you're in a big city it creates a problem: with everyone rushing to escape at the same time, it will cause a deadlock – only this time with more emphasis on "dead". Plan your route out of the city in advance to avoid traffic.
Search for survivors
Safety in numbers: when you can, make sure you are part of a group or let other people know you're still alive – if you remain on your own you will, eventually, go mad. Be careful about using big signals though – you may attract unwanted attention.