JW, how exciting but yes, I can see why it might all appear rather daunting.
You could get in touch with the Society of Authors. They probably wouldn't be able to advise on the detail of a contract as they could with a UK one, but they have a lot of members who aren't writers in the sense that you also say you're not a writer, and I'm sure they have experience of this kind of issue. There's a US equivalent of them, too, but I'm not sure who they are. The main thing, I would suggest, is not to sign anything until you've had it all explained to you and you're sure you know what's involved.
http://www.societyofauthors.org/index.html
Emma