Looks like it has slightly different install instructions than the other packs. I've edited the page to reflect this.
Inside the folder you downloaded (you'll need 7zip or WinRar to open it), there should be a file called "Step by Step guide" and inside there a file called "Recourse pack." Dragged the contained "F&A texture revival" folder into your .minecraft/resources folder.
If you then go back to the main folder, there should be files called "feathered" and "scaly." Pick which one you want to use, and then drag the contained "assets" folder into the "F&A texture revival" folder you already moved.
One that is done the pack should work. I might edit their pack to be easier to install at some point.