VW Golf Mk.II by TDM

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:

• steamapps
  • common
    • garrysmod
      • garrysmod
        • addons
          • VW Golf MKII by TheDanishMaster <-- Addon folder!
            • e.g.
            • lua
            • maps
            • materials
            • models
            • etc

• VW Golf MKII by TheDanishMaster/
  • info.txt
  • lua/
    • autorun/
      • tdmcars_mk2.lua
  • materials/
    • models/
      • tdmcars/
        • mk2/
          • black.vmt
          • black.vtf
          • glass.vmt
          • glass.vtf
          • grille.vmt
          • grille.vtf
          • interior.vmt
          • interior.vtf
          • lights.vmt
          • lights.vtf
          • lol.vmt
          • lol.vtf
          • nodamage.vmt
          • nodamage.vtf
          • nodamage1.vmt
          • nodamage1.vtf
          • nodamage2.vmt
          • nodamage2.vtf
          • nodamage3.vmt
          • nodamage3.vtf
          • nodamage4.vmt
          • nodamage4.vtf
          • nodamage5.vmt
          • nodamage5.vtf
          • tirea0.vmt
          • tirea0.vtf
          • tirea0_bump.vtf
          • undercarriage.vmt
          • undercarriage.vtf
          • undercarriage_bump.vtf
          • wheel.vmt
          • wheel.vtf
  • models/
    • tdmcars/
      • golf_mk2.dx80.vtx
      • golf_mk2.dx90.vtx
      • golf_mk2.mdl
      • golf_mk2.phy
      • golf_mk2.sw.vtx
      • golf_mk2.vvd
  • scripts/
    • vehicles/
      • TDMCars/
        • golfmk2.txt

piheni2555, Chicken is my are heart, huntertr2020, Mths_flp, Adex452YT, RezarXI, abaux6, lewisbeese, <~~Szczupson~~>, hubi 451 G4Skins.com, kuba09876, frank10 gamer, qmexique, XxxX, orxanbro231, Luda Pecurka, andreimenshykov, Anorek PompaTeam, jopdawid7, csgocases.com \DEADSHOTPRO7, vamicee05, zakinachet38, dawid fh12 2019 csgocases.com, justtwoduo, laptopfurby, ꧁༺₦Ї₦ℑ₳༻꧂, ifZn 我是嗎, Ekarta, jk2247, fryta, karayelesra2218, aengel427, reyizbabapro22, Mr.Nasav:), , aqua_king111, nadir.jashari0, nadir.jashari0, Madzikalll, holeybrayan78, JUUD0LF, [email protected]_, gtasanadreas1234, FredXGamingZ, marci20071128, SwitBEE, alilebg2018, dragan.pavicevic55, eromnaso, josyalencar34 +1427 others