Welcome to the club. Grats on a good buy and making him do the work to respect the car. Spoiled children that get everything, break most of everything, doing it right +10 points.
Now... onto modding, our excessive Safely modding, really applies to hardcore stuff with the Superchargers, ignore that. Safety first for 16 and starting. but that doesn't mean there aren't things that can be done.
My favorite because who doesn't like cheap things to do.
http://www.grandprixforums.net/ultim...0-a-49055.html
Give it a look over, if your comfortable with it then pass it on, could make for some fun weekend bonding with the car.
A good read for getting to know the platform.
http://www.grandprixforums.net/97-03...ems-60802.html
Might want to bookmark this one for him, could be handy in the future.
http://www.grandprixforums.net/raise...ix-4-3044.html
Consider doing this, the spoilers hug the rear decklid and stuff gets stuck and damage occurs, paint cracking leads to chipping, to rust and nastiness. Scroll down about halfway to Post #78 by Blue and it will show what you need to get and how to do it.