How do you get your downloaded gmod things onto gmod

you open the thing then extract all files to "computer/os:c/program files86/steam/stemapps/YOUR STEAM NAME/garrysmod/garrysmod/addons well it depends most guns and tools go in addons any maps go in computer/os:c/program files86/steam/stemapps/YOUR STEAM NAME/garrysmod/garrysmod/Maps