Formalisms, Electron Counting, Bonding (How Things Work); Organometallic Reaction Mechanisms; Synthetic Applications of Transition Metal Hybrides, Homogeneous Hydrogenation; Synthetic Applications of Complexes Containing Metal-Carbon alpha-Bonds; Synthetic Applications of Transition Metal Carbonyl Complexes; Synthetic Applications of Transition Metal Carbene Complexes; Synthetic Applications of Transition Metal Alkene, Diene, and Dienyl Complexes; Synthetic Applications of Transition Metal Alkyne Complexes; Synthetic Applications of n3 Allyl Transition Metal Complexes; Synthetic Application of Transition Metal Arene Complexes.