take old one off.. put new one on. if u have to ask, you shouldnt be doing your own work. i can understand how u feel, hell there was a time when i didnt know how to install an intake, i thought everything was going to be hard to install, but after i saw how easy the intake install was..i tried somethings and now i can basically do anything. everything i have on my car i installed myself, its kind of like a teach yourself kinda thing. i didnt haev any instructions, i just did it. easiest way to learn is to watch others do it. i doubt anyone here will do a comprehensive write-up for basic bolt ons.