This download looks like an addon. You need to extract the downloaded zip and put the addon folder in your Garry's Mod addons folder. You should end up with a directory structure similar to below:
Don't know where the Garry's Mod folder is or how to extract zip files? See more useful installation tips.
nick it is, чиний_violet, GoldenJedi, KIP, earlswtshrtsnuts, 123, chillman, Deathstroke, aekbel1974, sasamatic1306, MarkerPenn123, ✯☢Callum4567☢✯, LIDDLZ, vandroidt1jplus503, Victorino789, hi killer, doryqi, yongrar, cdkharshong, xpro12gamer2008, eduardo.com.kk, FRYCIA, emmanuelpolanco, Karan, muZ, Saman.exe, Saman.exe, 19gipa95, Solone, illxbexbatman, surururipa, None, Shadedgehog, alexjhosuerangel, bryandapaixao125, Hayze, fanumedia, Soy_Alexys, (ᗜˬᗜ), megaboyred, medo_on_yt, Yiğit ama cu da, Me abro siempre como tu mama, JkaD, IzzyIA, deegood0509, sageRocket, recellepower, Jweehen, coryanderson1 +7992 others
