Installation is easy
Buy the CAI from Brenspeed or other reputable, you will receive a DVD where a certain magazine installed a CAI, headers, shifter, exhaust and a supercharger. It is not an instructional video but it will give you the idea.
There are sites with pictorals (I did not keep the link) and I believe there is something in this site too.
If you have a socket set and screwdriver, you have it made. You will get a computer programmer loaded with tunes. Flashing the computer is simple, plug it into the car, press a couple buttons and that is it.
Installing the CAI is just about as easy. Get a custom tune, the canned tunes are pretty mild compared to Brenspeed and others.