Mr Light wrote:
the Valar being the angels, right? I'm vague on my memory, there's Illuvatar/God and then the big angels, of which Morgoroth and Sauron were ones, and then the smaller angels, like Gandalf and Saruman? Or was Sauron one of the lesser angels as well?
There's Eru/Illuvatar, who is basically the Christian God (although no one seems to worship him), the Valar are basically Greek Gods, and yes, Morgoth was one of them, and the Maiar are the equivalent of angels, and Gandalf, Saruman and Sauron were originally Maiar.