Like a chant, there are always a few things that people need to keep in mind. This article has some basic tips that one would hope any individual who has spent more than a few days on this site would be able chant, if not in these exact words, with some semblance to the basic premise.
Don't Be an Idiot or a Hero
In the occurence of being surrounded do not scream in fear and look around you in a circle as all the zombies go in for the kill. Keep a steady head and a steadier arm -- zombies should be able to be walked away from, so you have the advantage (more than likely) of speed and reason. Simply focus on two or three zombies and create an opening. You do not have to kill all of the zombies....at all, you can focus on killing just enough to escape or just knock them down. Further, it is equally important in this event to not get cocky. Always treat every situation with caution and a sound mind. Never act hasty or brash. Remember: keep your head and remove theirs.
Bigger is Not Always Better
The Mall of America has copious amounts of space and great abundance of supplies and even a fair amount of booze (wine store), the problem is, it is so large that it's virtually impossible to keep the place free of zombies. Similarly, using the M2 Browning machine gun might punch some big holes, but the noise would be so great that it would draw zombies from all directions. You don't need to get the biggest or the best of something -- sometimes a .22 rifle or a small rural home might be more effective.
Think of Helping Others
When under attack helping people is one of the best plans. You never know when you will need help and if you are a selfish jerk who doesn't give any aid, you will most likely not recieve any when you need it most. Remember there is great strength in numbers. Saving as many people as possible is a good idea. This does not mean to become a movie style hero that goes in and saves a bitten person being surrounded by 100 zombies and your on the outside with a knife and a derrenger. The only way you could do this is with some heavy artillery. Just keep a watchful eye out for living people and let them join up with you.
Have a Backup Location
If your smart you will gather people to join you and when you do you will need to find a place to stay. If 100 of you decide to hold up in one Super Store, you may get a little cramped and supplies will run out quickly. The answer to this predicament would be to take over multiple centers, like in a plaza for instance. Secure them so that they can be inhabitable. Also, have backup locations that you can go to in case of an emergency, including locations that are 10, 20, or more miles away if the location you're in now becomes too dangerous.
Know Your Surroundings
There may be times where you will need to put yourself in harms way by leaving your safe place to accomplish something -- supply run, rescue mission, etc. -- it is at times like these that you will want to know your area very well. Detailed maps (county maps have some amazing detail) and just basic familiarity with the area is absolutely important in case you must venture beyond your comfort zone.
