Review of Time-Independent Quantum Mechanics -- Electromagnetic Radiation -- Radiation-Matter Interactions -- Absorption and Emission of Light -- System-Bath Interactions -- Symmetry Considerations -- Molecular Vibrations and Infrared Spectroscopy -- Electronic Spectroscopy -- Photophysical Processes -- Light Scattering -- Nonlinear and Pump-Probe Spectroscopies -- Electron Transfer Processes -- Collections of Molecules -- Metals and Plasmons -- Crystals -- Electronic Spectroscopy of Semiconductors -- Physical Constants, Unit Systems, and Conversion Factors -- Miscellaneous Mathematics Review -- Matrices and Determinants -- Character Tables for Some Common Point Groups -- Fourier Transforms.