One of the most simple yet helpful books I have read on preaching is called, “Popular Preaching”by Dinsdale T.Young, D.D. first published in 1929.
His basic message is that you have to know the language of those you are preaching to and to preach to them in that language so that they can understand you and to know how long you can preach to them.
I have also read some of the following, Lloyd Jones as mentioned by Joshua, The Preacher & Preaching, Samuel T. Logan, Jr, John Stott’s I believe in Preaching, W.Boyd Carpenter - lectures on preaching, J.E. Adams - Preaching with Purpose , especially his chapter on Determining the preaching portion.
One of the questions I would like to ask about preaching is how many of us write the objective sentence before we prepare the sermon or is that something not really used?
craig