I started there. It's his best album and it's quite expansive. There's at least a taste of everything that makes his music great. All of his genius is there. If you don't like that album then maybe P is not for you. If you like it - go chronologically from the beginning. And along the way - soak up the singles, several of his singles have extended versions that kill. And there are b-sides that are as good or maybe better than his album tracks. If you're in deep after that - soak in the unreleased albums and songs. There are several.