It's relativly simple to install. Go to
http://www.crutchfield.com I really like their stuff.
I have a '79 camero and I opted for a cassett player and got some blauphunkt (sp?) speakers. Just follow the directions which come free with your stuff. Pay attention to the wiring on the old harness for the old radio should you have one. You may need a harness adapter as well...
If your car doesn't already have a radio, you'll want to get a voltage tester. something simple which will let you indicate the 12V Constant, Accessory, and Dimmer.
Enjoy dance: