Tools and setup for modding - Solomonk-Solo/DayZ-modding-How-To GitHub Wiki
You first need DayZ Tools and pboProject from mikero.
DayZ Tools installation and setup
pboProject installation and setup
If you plan doing overrides from mods you will need ExtractPbo from mikero. All vanilla DayZ files are already on your P drive if you followed my steps.
I highly recommand to use Visual Studio Code to edit your files.