I've had several friends "like" this on FB recently. I clicked through and evidently it's a "community page" for fans of Grace and Truth books. I looked through their wall posts and while it doesn't address spanking outright, it does seem to have a lot of focus on first-time obedience.
Their Books for Mom tab has a Sally Clarkson book highlight along with a few others written for moms by women.
I've become so twitchy about the word "training." Just wondering if anyone has heard of them?