1. Introduction.- 2. Cuprates.- 3. Theory of Superconductivity.- 4. Manganites.- 5. Titanates and Vanadates.- 6. Cobaltates.- 7. Quantum Effects in Orbitally Degenerate Systems.- Appendices.- D.1 Seebeck Effect.- D.2 Peltier Effect.- D.3 Thomson Effect.- D.4 The First and Second Laws of Thermodynamics and Thermoelectric Response in Solids: Thomson's Considerations.- D.5 The Third Law of Thermodynamics and Thermoelectric Response in Solids.- References for Appendices.