Config is the heart of your addon, no matter how nice model and textures you have, they are empty shell without a configuration to make it all run in-game.
Dispersion for weapons.
Pilot proxy rtm file creation.
Custom face, how to add custom face to your soldier.
Shotgun config for real shotguns.
(<class>) not found in active addons error, how to fix it.
Extract original bis configs as text files to be used as reference.
Vehicle sound tutorial by realitymod.com