This download looks like a lua file. You need to place it in your lua folder inside the Garry's Mod 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.
[GL] J. Wilson (Jet), [sim] [W-G] Lewis, Putin, Angel, LRBM, Edhilithron Jakob, ⭐ -GPX- TOJU ⭐, tatatanato, st3am, https://youtube.com/woahdusty, KuzyXD, Jonah Deez, 100 CAMADAS DE VERGONHA NA CARA, xXTheRedGamerXx, dustsucker, EvanRess, orororororo, Maru Maru ><, senayserkol47, GamerGhost, Muzy, ^1QQ^7shka, [Hyper]_SuPEr, TinyPop, DEATHBYMILKFLOAT, [ExG]Super dreams, doctorplier, [DIE] HARDCORE MEDIC, recelestino90, Zootz, mjolnir, Aspect, effeduaf, D3Networking2127, D3Networking2127, D3Networking2127, H3xag0n, caw caw, Topic™, thetntdude7, Sparisk, jwright159, RedPlayzAN, B0mbardiEr, Mau, Twinbrand, S4mZY, linusdraco, Bob Marley, GodzillaFightn +1199 others
