At that age I'd recommend looking at before five in a row. As a storyteller and librarian, I love the way this curriculum works. The library should have most if not all the books you would need to use.
http://www.fiveinarow.com/before/
I wouldn't do too much with a three year old. Pushing too much academically and before they are ready can have the opposite results of what you might wish for.
If your child grows up watching you and your husband read, he is likely to want to read books.
If you make constructive learning available in the form of toys and outings, you'd be surprised at what he will learn on his own.
Yes, you can find materials that teach religious and secular views in science for the coming years. It's great IMO to make both available and talk with your child about your views and why you hold them.
Stellar