You need to go to BestBuy, Circuit City, or any mom&pop Car Audio Shop and buy a "hi-lo Converter", also known as a High Level Input Low Level Output Coverter.
Other than that, all you will need is a basic amp install kit, and a 12v relay for wiring in your remote lead for the amp.
As far as the installation itself goes, I would recommend going with a professional, especially with a new car. The last thing you want is to possibly void your warranty by messing something up with the install. Take it to a shop, it will probably cost your anywhere from $80-$150 depending on where you go, but just make sure it gets done right.