What do readers learn about Jake Brigance in Chapter 8?

Rocky Childers has been Ford County's District Attorney for more years than he cares to remember, although he is only forty-two. The job is part-time, but takes up the bulk of his time and pays only $15,000 annually. It is clearly a dead-end position. He is relieved to have an occasional item of interest like the upcoming Hailey rape trial.