The case comes with 4 fans - 2 x 120 at front, 1 x 120 rear, 1 x 140 led top. It also comes with a 3 step fan controller
Plus you'll have your cpu cooler fanhttp://www.asus.com/Motherboards/MAXIMUS_VI_HERO/specifications/
The mobo comes with a cpu fan header - plug the cpu cooler fan into it - What cooler are you using? Try Coolermaster Hyper 212 EVO
And 3 chassis connectors - I'd plug the front 2 into one with a Y piece lead and each of the other 2 one each into each other fan header - read your mobo manual.
Or you can plug your case fans into the case fan controller - read your case manual