Hmm...it would depend on the sort of apocalypse I ll face, of course.
Zombies scenario :
- First instinct - survival.
- Get ahold of anything and everything which could help out in case of zombie (and melee) attacks.
- Stay out of sight for long periods of time and avoid the streets in populated areas.
- Desert-like areas left, then scavenging is primo uno.
- Any (all) survivors will need to band together (let's face it, one person against a horde of zombies is ultimately fighting severe odds, unless you are Superman)
- In case of in-group skirmishes and arguments, one zombie attack might prove enuff to solve that problem.
- Animals can actually prove to be more valuable than humans, in case they can be tamed.
(Suggested Reference - World War Z by Max Brooks)
Disease scenario :
- Depending upon the kind of disease causing the Apocalypse (most likely air-borne or water-borne), gas-masks or related equipment, and closed-clothing of all kinds.
- Utmost care needed when dealing with food and drinking items.
- Quarantine laws to be observed within the survivor-group, and any signs of infection or contagion are to be dealt with immediately. (expulsion from the group, or eventual termination if needed)
- Avoid all contacts with animals and birds, as they could be possible carriers.
- Contagion could be inherent or internal too, so close watching of any/all survivors is most imperative, in case of recessive genes/hormones becoming suddenly dominant.
(Suggested Reference - Agents of Apocalypse by Ken De Bevoise)
Starvation scenario :
- First and foremost, secure anything and everything related to food and drinking.
- Rationing of daily needs is imperative.
- Desert-like stretches of land will be dominant everywhere, so its pretty important to stay at a place which is close to a body of water, preferably a river, or ocean.
- In case of the abovesaid running dry (ergo a dry Earth everywhere), ground water reserves to be tapped and exploited.
- Possibility of epidemics is pretty high, so utmost care needed when dealing with water resources.
- Group cohesiveness, control and empathy are important traits for the survivors, else chances of making through are minimal.
(Suggested Reference - African apocalypse: The continent burning into a desert, an article in The Independent)
Will do the War scenario soon.