Base Defense[]
Once you've made it far enough in the game to be able to make a base you probably should since the game gives you only two days before ghouls will attack you and so you will need a base, however you may ask yourself where should i build, what should i build and what should i build it out of so lets discuss some of the ways to do that
Abandoned base or home[]
This is easy to do but doesn't work well in the long run. first you need to find an abandoned home(use map to find one) or an abandoned base. since it's unlikely you'll find an abandoned base rather than a base whose owner is out looking for resources so i'll focus on abandoned houses mostly. once you've located a home i suggest you look through all of the storage to see if there's anything useful (if your lucky you can find a gun along with some ammo) now place a workbench a campfire and/or fire pit and you've got a base. the reason this doesn't work in the long run is due to the lack of space that isn't required to move through the house
Tree House[]
This take more effort and can be more of an extension to a base already made. the tree house requires you to cut down lots of trees until you get acorns now go to a firepit or campfire and turn them into tree seeds (you get 5 tree seeds per acorn) once you have the tree seeds you should then plant them as if they were walls for your base (leave gaps for doors) now with the wood you collected from chopping trees and create wood spikes aka traps and surrond