Among the wonderful and wonderfully free expository teaching out there are daily podcasts from R. C. Sproul and John MacArthur.
If you have not added them to your iTunes, now is the time.
Renewing your Mind with R. C. Sproul
Grace to You with John MacArthur
While I really respect both men, if they find a point of disagreement, I lean toward Sproul. Ya know… Just FYI.