How Sermons Work

I found a free e-book recently on preaching called "How Sermons Work". It's by David P. Murray who is Professor of Old Testament and Practical Theology and Puritan Reformed Theological Seminary. It provides a good concise overview of some of the basics of sermon prep that the young preacher might find very useful. I'm always on the look out for new preaching resources and wanted to pass this on to you as well.