HELLO! Thanks for downloading. But your not here for thanks. So here is some instructions

Extract the zip if not already done and drag the "Layers" folder into the minecraft "saves" folder. 
If you do not know how to access that folder just press WIN + R. In an instant a new window will pop-up.
Within the "Run" window type %appdata%, next access the .minecraft folder and locate saves, then just drag
the world within that folder.