If zombies begin to enter your town/city you will need to stay calm.
At the first signs of a zombie infestation you will need to find something long and hard, like a baseball bat or a hockey stick.
Fine a vehicle that will be easy to use, safe, and can carry a lot of items like a van.
Drive to the nearest store and stock up on canned goods and water. Also get lots of light clothing that will rip if it gets caught on something. Do not go for something thick and heavy because it will slow you down and you will die.
Find another vehicle and use the hard item to bust it apart and thicken up your ride. You may want to pimp it out as well.
If you never used a gun before don't bother trying now because it would be too much of a risk.
Drive to a safe building and check out the inside and bash the brains of any zombies inside. Unload what is in your van into the building and then seal off the exits. Block off all the windows as well. Don't forget to take the radio out of the car so you can hear what is happening on the outside.
If you hear that an army force is coming to kill the zombies then wait until you hear shots outside and then open a door and yell for help.
If you hear that the city/town will be sealed off and then bombed in 24 hours then you will need to get in the car and leave as quickly as you can. If you see survivors let them in the van and ask if they got injured. If they got bit then kick them out.
When you get to the edge of the town/city keep driving until you get to safety. You would need to drive really far to get to where the zombies couldn't walk to.
If zombies already got to the nearest town then you will need to contact any and all survivors and try to kill or trap all of the beasts.

If you follow this guide well then you will be able to get out alive!