Part A: A. I. Introduction; A. II. Photoelectron spectrum of neon; A. III. Auger spectrum of neon following 1s ionization; Part B. 1. Experimental Aspects: 1. The dispersive element of electron energy analyzers; 2. Characteristic features of electrostatic analyzers; 3. Electron detectors; 4. Electrostatic lenses; 5. Disturbances of the performance; 6. Electron-electron coincidences; Part B. II. Recent Examples: 1. Electron emission around the 4d ionization threshold in xenon; 2. 2p photoionization in magnesium; 3. 3s Satellite spectrum of argon; 4. Spin-polarization of 5p3/2 photoelectrons in xenon; 5. Post-collision interaction between 4d5/2 photoelectrons and N5-O23O23 1S0 Auger electrons in xenon; 6. Threshold double photoionization in argon; Part C. I. Useful Reference Data: 1. Atomic units; 2. Some spectroscopic data for calibration purposes; Part C. II. Wavefunctions; 1. One-electron wavefunctions; 2. Evaluation of determinental wavefunctions; 3. Hartree-Fock approach; 4. Mixing of wavefunctions; 5. Recasting of correlated wavefunctions in helium (ground state); Part III. Special Theoretical Aspects: 1. Photon-atom interaction and photoionization matrix elements; 2. Different formulation and approximations for photoionization; 3. Photon-induced L3-M1M1 Auger decay in magnesium described as one- and two-step processes; 4. Derivation of angular distributions by means of statistical tensors; 5. Angular distribution and alignment of L3-M1M1 Auger electrons in magnesium; Part C. IV. Polarization Properties: 1. Angular distributions for different light pPolarizations; 2. Description of electron and photon polarization; Part C.V. Special Instrumental Aspects: 1. Time-of-flight analysis of electrons; 2. Optical properties of cylindrical mirror analyzers; 3. Supplements to electrostatic lenses; 4. Convolution procedures; 5. Solid angle corrections; 6. Shielding of the earth's magnetic field; 7. Formation of a gas beam by capillaries; References; Index.