Here are some good posts on preaching:

Sermon Prep: A Week In One Life – Stephen Um (via The Gospel Coalition)
A glimpse of what my weekly approach looks like, followed by some suggestions for continual growth in our preaching.

Expressing Beautiful Truth In One’s Preaching – Trevin Wax
Too often we preachers spend all our time making sure we’ve understood the meaning of the text and can communicate it faithfully. Precious little time is spent thinking about how we can communicate that meaning beautifully.

A Word To Those Who Preach The Word – R. Kent Hughes (via Tim Challies)
There is nothing quite like it—the Holy Spirit filling one’s sails, the sense of his pleasure, and the awareness that something is happening among one’s hearers.

Do You Expect A Response To The Preaching of the Gospel? – Roland Allen (via Justin Taylor)
To preach the Gospel requires that the preacher should believe that he is sent to those whom he is addressing at the moment, because God has among them those whom He is at the moment calling: it requires that the speaker should expect a response.