From David Mathis's introduction to With Calvin in the Theater of God:
Calvin's big, biblical vision of God changes every day life. If you really want to be practical, don't reach for gimmicks, checklists, and self-helps, but come with Calvin to the Bible and get to know the most important realities in the universe: God, creation, sin, heaven, hell, Jesus, his cross and resurrection, the Holy Spirit. The biblical vision of the glory of God in Christ is the most practical reality in the universe.
You can read the introduction, and the rest of the book, online for free here. I'll have more to say about this book next week.