basic_tools.zip

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
          • Basic tools <-- Addon folder!
            • e.g.
            • lua
            • maps
            • materials
            • models
            • etc

• Basic tools/
  • info.txt
  • settings/
    • controls/
      • axis.txt
      • balloon.txt
      • ballsocket.txt
      • ballsocket_adv.txt
      • ballsocket_ez.txt
      • button.txt
      • camera.txt
      • colour.txt
      • duplicator.txt
      • dynamite.txt
      • elastic.txt
      • eyeposer.txt
      • faceposer.txt
      • hoverball.txt
      • hydraulic.txt
      • ignite.txt
      • keepupright.txt
      • magnetise.txt
      • motor.txt
      • muscle.txt
      • nail.txt
      • nocollide.txt
      • physprop.txt
      • pulley.txt
      • remover.txt
      • rope.txt
      • rtcamera.txt
      • slider.txt
      • statue.txt
      • weld.txt
      • weld_ez.txt
      • winch.txt

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