You will get a " .lib4d" file which contains all textures , items , etc.

Easy and handy installation.
First think you had to do is open your Cinema 4d Studio
then you will need to drag that " .lib4d " file directly to C4D.

Then a content browser will appear showing you a "ZeroDesignRig" folder with 13 sub folders which contains all the textures , skins , weapons , armors, RIG and bonus content. :)