There are no shortage of self-help books out there that can do wonders for helping your marriage.
Books and blogs are good for folks who need strategies that can actually work and most of the ones I've seen don't necessarily require a ton of time or brain power.
There's a book called Babyproofing Your Marriage ages ago and I heard it was really fantastic. It would be a good wedding present. Or even a baby shower gift. . And right now, the book is like $5. What do you have to lose?And I was just introduced to Project Happily After (book and blog). Haven't read it yet.