Sometimes we forget that the Trinity is an immensely practical doctrine. It isn't practical in the sense that it gives us "10 steps for _________" rather it is practical in the sense that a foundation to a house is practical for living in the house. Everything you do is grounded on the strength of that foundation. In the same way our worship, our belief in the gospel, all of it, is grounded in the Trinity. None of it would happen without the eternal being of a God who is Triune and so what you believe about this God will "practically" anchor your whole life.
With that in view: Matthew Lee Anderson has a blog post plugging this book, and there's a giveaway.