This has always been one of my favorite songs. I have this childhood memory of riding in my dad's car with both of us singing along with it. I also remember learning the chords when I hadn't been playing guitar all that long (a nice way of saying that I never played it very well).
Anyway, American Pie is one of those songs that made references to things going on in the culture, and it was fun to try and guess what each allusion meant. Someone has tried to do it in detail, and created a video for the song that explains some of the symbols. Here's the link:
At the very least you'll get to hear the song one more time. Enjoy.