I Relativistic Kinematics and Quantum Fields.- 1 Introduction.- 2 The Theory of Special Relativity and Relativistic Kinematics.- 3 Particles and Fields.- 4 The Dirac Equation and the Dirac Field.- 5 The Scattering Matrix and the Scattering Cross-Section.- II Quantum Electrodynamics.- 6 Introductory Remarks.- 7 The Quantization of the Free Electromagnetic Field.- 8 Further Aspects of the Theory of the Free Dirac Field.- 9 Electromagnetic Coupling and the Perturbation Expansion.- 10 Simple Reactions in Quantum Electrodynamics.- 11 The Muon and Muon Pair Production in Electron-Positron Annihilation.- 12 External Fields.- 13 Positronium.- 14 Radiative Corrections.- III The Strong Interaction.- 15 Historical Overview.- 16 Phenomenology of Hadronic Reactions.- 17 Internal Symmetries of the Strong Interaction and the Quark Model.- 18 The Naïve Parton Model.- 19 The Basic Principles of Quantum Chromodynamics.- 20 Jet and Quarkonium Physics.- IV The Electroweak Interaction.- 21 From ?-Decay tothe W-Boson. A Historical Survey.- 22 The Lagrange Densities of Quantum Flavor Dynamics and of the Standard Model.- 23 Decay Processes in the Standard Model and the Determination of the Quark Mixing Angles in the Charged Current.- 24 The Neutral Current and the Determination of sin2?w.- 25 The Physics of the Z-, W-, and Higgs Bosons.- 26 The System of Neutral K-Mesons and CP Violation.- 27 Order and Disorder in Elementary Particle Physics.- Appendices A Dirac Matrices and Spinors.- B The Feynman Rules of QED.- C The Groups SU(2) and SU(3).- C.1 The Group SU(2).- C.2 The Group SU(3).- D The Feynman Rules of QCD.- F The Fierz Transformation.- G The Feynman Rules for the Standard Model in the Unitary Gauge.- H The Kobayashi-Maskawa Matrix for Three Families.- I.1 General Formalism.- I.2 Application to the System of Neutral K-Mesons.- J Solutions to Selected Exercises.- References.