"Living in an Undead World"
REMAIN CONCEALED:Although the topography of your location should minimize the chances of discovery, you never know when a zombie or raider will venture close to your camp. Make sure no lights can be seen at night. Make sure the smoke from your fires is extinguished before daybreak. If the areas natural elements do not already camouflage your compound, do so artificially. Practice noise discipline at all hours of the day and night.
Yell only when necessary. Insulate your communal buildings so that music, conversion, and other sounds will not escape. During new construction and day-to-day maintenance, post additional scouts at the outer limit of the potential noise range. Remember that the slightest sound may be carried on the wind and can betray your position.
Always determine which way the wind is blowing, either in the direction of possible inhabitants (the direction you came from) or across a known safe area (a large body of water, deep desert, etc.). If your power source is noisy (e.g., a fossil-fuel generator), make sure it is insulated and used sparingly.
Such a constant state of heightened vigilance will be difficult at first. As time goes by, it will become second nature.
Life was lived in this fashion for centuries from medieval Europe to the steppes of central Asia. Most of humanitys history has been the story of small islands of order in an ocean of chaos, people scratching to survive with the constant threat of invasion always hanging above their heads. If they could survive in this manner for countless generations, then, with a little practice, so can you.