So the zombies are up and running... I guess I should say shambling...
A firearm is a good choice when facing any "SHTF" situation.
Some things need to be considered in deciding on your firearm:
If you answered "NO" to any of these questions you need to educate yourself because if you don't know how to use the firearm, get ammo or realize that the 1000 rounds of ammunition you have weigh 200lbs and can't run 5 feet, you are essentially screwed.
Different types of firearms will be useful in different situations from close up (probably want a handgun for that) to long range (sniper rifle or good old fashion hunting rifle will do the trick) so it's up to you to make the choice.
Common types of firearms include:
A melee weapon is a weapon used for hand-to-hand combat (prepare to get dirty or bloody givin the situation you find yourself in)
There are two classes of melee weapons:
It's your decision on what you think would be the best melee weapon for you.
A weapon of opportunity is exactly that. It's anything you can get your hands on to defend yourself from an attacker, be it human or zombie. A handful of salt, sugar, sand or mud thrown into the face of an oncoming foe will disable them (living foe that is). Your surroundings can become a weapon of opportunity as well, push a zombie off the roof of a building, he probably won't be shambling after you too fast after that.
So have a look around your home, you may be surprised at how many things you will find that you can use to defend yourself in a tight situation.