Here are a couple great old threads that would be a good place to get some info. I agree with many that it's a pretty fantastic line - I intend to add a couple more to my collection at some point. My current favorite (and only one I own) is Cozé, a kick ass leathery patchouli chocolatey thing.
Parfumerie Generale appreciation
Parfumerie Generale, interesting niche
Parfumerie Generale Favorites