I mostly read this for the calorie ratio breakdown, and how to find the grams of protein to fat, to carbs that would work best for my body and workout routine. It's surprising how much is in here, and how much isn't--I'm constantly finding contradicting information or at least large gaps in information when it comes to diet.

This is a decent starting place, I recommend The Secret Life of Fat for some surprising, and helpful data about fat and what it does in your body.
Few people truly understand the best way to eat, and fewer can stick to a healthy plan, even if they know it. I've learned a ton lately, and I'm still included in those who don't truly understand--I don't think we have enough data, and I think physiology varies person to person, making this a fascinating, and infuriating topic.

(I say this, having lost over 100 lbs, while eating *more* fat, and fewer vegetables--seems insane, but my bloodwork shows that I'm better for it).