Go to the related link.
AMX Mod X applies the plugins to your game. Install AMX Mod X, and mount your plugins.
Yes
Yes, there are a couple of Zombie Mod plugins for AMX Mod X. The most popular ones are Biohazard and Zombie Plague. They can all be played online, because Counter-Strike is an online game.
It was made for mature gamers and is not recommended for small children due to the violence.
It is a mod u can install, but i don't know where to install it
To download counter strike source first install Steam at Steam com. then search up Counter Strike Source. it will be in a package with garrys mod, you can buy them both separately or together for £15.00
yes
get a mod
Check your "Options" to make sure the spray you want is still set.
Most mod servers have the admin mod and the game mod (zombie, super hero, etc)
You can download AMX Mod X and its plugins at: amxmodx.org