This lecture covers the effects of adding a console to a beam, transforming a truss into a beam with a console, and determining support reactions using the method of auxiliary arcs and cables. The instructor demonstrates how to analyze the structure step by step, starting from determining support reactions and progressing through the resolution of internal forces. The introduction of a console can lead to the lifting of certain supports under vertical downward loads, resulting in compression in the lower part and tension in the upper part of the structure.