I remember a local electronics store's slogan...
A professional installation is not free,
A free installation is not professional.
:beer:
Anyways, I've installed two decks with barely any experience. I bet if you look on the Internet, you'll see step-by-step instructions on how to do things like open up your car console and stuff. If your car has a standard DIN and not one of those integrated control consoles, it should be much easier.