I guess if we're throwing casual orientation stuff in there, I'd toss the nonexistent hat in as a token irreligious apatheist* that finds theology to be pretty.
I probably wouldn't really recommend Nietzsche to someone curious about atheism, though, roughly in the same sense I wouldn't recommend Dawkins. N's a bit heavier than someone wanting an initial primer probably wants to deal with. There's definitely a few folks that fall under the general umbrella of existentialism (Well, re: Nietzsche, anyway. I forget what dawkins is besides an acerbic atheist and somewhat iffy writer on the philosophy of biology) that could provide some interesting words on the subject, though. I can't actually
recall any of them at the moment, but they're out there.
I'd probably say just... ask questions. Hopefully folks here can softball the subject enough to not have it turn shrill

*Predisposed against religious organization -- if not necessarily spirituality or individual worship -- and of the belief the divine, to whatever extent they do or do not exist, are irrelevant, for those that want the definition.