The document outlines Dan's top 10 energy efficient things that can be done in buildings. They are: 1) air seal common areas and apartments, 2) tune up, upgrade or replace the heating plant, 3) modify or change how domestic hot water is made and delivered, 4) fine tune or upgrade the heating distribution system, 5) insulate heating and domestic hot water pipes, 6) upgrade lighting in common areas and apartments, 7) insulate the roof deck, roof cavity or wall cavity, 8) paint the roof white, 9) fine tune the mechanical ventilation system, and 10) repair or replace windows. The document provides examples of each tip.