After explaining some points from the previous sutta, The Bodhirajakumara Sutta, Bhante G. continues with the the next sutta, the Dhammacakkappavattana Sutta: Turning the Wheel of Dhamma. Samyutta Nikaya, B.Bodhi, tr, p. 1843ff. This sutta contains the basic teachings of the Path: The Four Noble Truths, the three aspects, and the 12 modes. In other words, the theory, practice and final complete understanding of each of the The Four Noble Truths.