Newbie Needs Help :(

I downloaded a building form the gmod download list and i wanted to spawn it in the game can some1 tell me the folder i put it in so i can spawn it plz i just got the game 4 days ago

You need to be more precise. Was it an advanced duplication, save game or whatever?

If its a save game, put the save file into /garrysmod/garrysmod/save, startup gmod, select ‘LOAD GAME’ and choose the right one.

better yet… just give us the link to the file that you downloaded