1. Generalities.- 2. QCD as a Field Theory.- 3. Renormalization in QCD.- 4. Perturbative QCD, I. Deep Inelastic Processes.- 5. Perturbative QCD, II. OZI Forbidden Decays; Drell-Yan Processes; Jets; SVZ Sum Rules; Exclusive Processes and so on..- 6. Hadrons as Bound States of Quarks.- 7. Light Quarks; PCAC; Chiral Dynamics; the QCD Vacuum.- 8. Instantons.- 9. Lattice QCD.- 10. The Perturbative QCD Series. The Parameters of QCD.- Appendices.- Appendix B: Some Useful Integrals.- Appendix C: Group-theoretic Quantities. Group Integration.- Appendix D: Feynman Rules for QCD 383 Appendix E: Feynman Rules for Composite Operators.- Appendix F: Some Singular Functions.- Appendix G: Kinematics, Cross Sections, Decay Rates. Units.- Appendix H: Functional Derivatives.- Appendix I: Gauge Invariant Operator Product.- References.