Ask HN: Guide to becoming a dad?

In a delightful father's day surprise, my wife and I found out this afternoon that she's pregnant. We'd planned on this, though maybe not for another few months. After the initial excitement/crying/what have you, I realized that this is a subject that I know woefully little about.

Since I can't tell anyone I know just yet, I'll ask anonymously: how do we do this? I'm asking mostly for books and articles to read, but advice is helpful, too. Did any of you read a helpful book that approached prenatal nutrition (I cook for us), preparation, early child rearing, etc. from a scientific or "hacker" perspective? It seems like a lot of what I'm finding on Amazon are based on fads or shaky-at-best assertions. Recommendations for a dad-to-be are very much appreciated.