I love my husband, I really do, but I have been so frustrated with him lately. I am really lucky that he is so involved and tries to stay informed with everything. But he acts like he knows EVERYTHING about pregnancy, labor, breastfeeding, and newborn care. His mom had a lot of kids, so I understand he was around kids a lot... but that was all while he was still growing up. And he doesn't fully know the responsibilities or requirements it actually takes to take care of a newborn. When I ask him to read up on something with me in one of our baby books, he says, "I already know all about that." And some of the information he does know, some he doesn't. It's just frustrating that he thinks he's above all of this information. How do I get through to him that he doesn't know everything about breastfeeding and newborn care?! It's driving me crazy  
 
Re: Frustrated!
Obviously, we've been through pregnancy before, as this is our third, but I say just wait it out... once your LO is here, he'll be faced with reality.
He doesn't really need to know about breastfeeding and all that, as he won't be doing it. He'll need to know techniques to help you through labor, but he can't ever truly know as he'll never experience it himself.
Right now, my H is getting over thinking he knows all about potty training. DS is 2 and we are going to try to train him, just so we won't have 3 in diapers if we don't have to... before we started, he said he'd take care of it in a weekend. When that didn't happen, he let me take over... and I work one or two evenings a week and he watched the kids and texted me that he doesn't envy me my job as a mother! Ha! I guess the recognition was nice, though.
At any rate, I know Hs can be frustrating, but really there is nothing you can say or do to convince him he doesn't know everything. He won't break the baby, but as he actually interacts with LO he'll realize how much he didn't/doesn't know.
I'd also add maybe just talking with him about things... not asking him to read up on it. That way, you can both get on the same page about things, and he doesn't feel like he has to "learn" something he "already knows"...?