The nuclear war might happen, so better be ready.
Either the nukes will hit you, or they will miss you.
If they hit you, better be in bunker.
However, if nukes miss your area, you have a whole new problem.
Since the supplies of food will quickly be depleted in your area, what will happen is that millions of hungry people will form gangs to fight over whats left.
And if you have supplies, those gangs will attack you. Actually, they will attack you even if you dont have supplies.
So naturally, you will want to have place where you can hide from others, place that cannot be easily found by others, something like hole in the ground deep in the forest.
You will also want to have supplies of food and water. Choose food that can stay good for years. Also, make sure wild animals cant get to your food.
Now, thats not the only thing you want to rely upon.
You will also want to hunt and forage.
Of course, you will want to be in parts of forest that has lots of chestnut, walnut and hazelnut trees, since these are edible. Acorns are edible too. However, you must cook them.
Make sure you learn to tell difference between these trees and poisonous look alikes.
Cooking means you also need lots of fire starters to last for years. Lighters, matches and similar things.
Whats also edible is part of tree's bark called cambium. Some pine trees have edible cambium.
Bird's eggs can be found at bird's nests. Likewise, some small animals can be found at animal's nests if you can find nests.
If you find squirrel's nest, you can steal her nuts.
There is also wild honey, if you manage to find it. You will have to cover large area in look for food.
Drinking blood from animals will give you some nutrition, but dont drink too much and learn to process it first.
Eating insects is also a good way to survive. However, its really disgusting too.
Finding roots of some plants, like burdock, is good since its edible.
For hunting, I believe gun might not be a good choice, since it makes lots of noise. Well, some dont, but still.
Bow and arrow are good enough. You also need fishing equipment for fishing, assuming there is river, lake, sea... nearby.
You might also want a slingshot. Its good for hunting small birds.
Since food will not be easily available, you probably want to practice one meal per day.
We can all only hope that nuclear war doesnt happen, because if it does happen, I will no longer be able to be a vegetarian.