Electronic and photoelectron spectroscopy can provide extraordinarily detailed information on the properties of molecules and are in widespread use in the physical and chemical sciences‎.‎ Applications extend beyond spectroscopy into important areas such as chemical dynamics‎,‎ kinetics and atmospheric chemistry‎.‎ This book aims to provide the reader with a firm grounding of the basic principles and experimental techniques employed‎.‎ The extensive use of case studies effectively illustrates how spectra are assigned and how information can be extracted‎,‎ communicating the matter in a compelling and instructive manner‎.‎ Topics covered include laser‎-induced fluorescence‎,‎ resonance‎-enhanced multiphoton ionization‎,‎ cavity ringdown and ZEKE spectroscopy‎.‎ The volume is for advanced undergraduate and graduate students taking courses in spectroscopy and will also be useful to anyone encountering electronic and/or photoelectron spectroscopy during their research‎.‎