Introduction 2. Massless QCD and Scale Invariance 3. The Renormalisation
Group and Asymptotic Freedom 4. More on the Running Coupling 5. Application to
Hard Processes 5.1 Re+e− and Related Processes 5.2 The Final State in
e+e− Annihilation 5.3 Deep Inelastic Scattering 5.4 Factorisation and the
QCD Improved Parton Model 6. Measurements of αs 6.1 αs from
e+e− Colliders 6.2 αs from Deep Inelastic Scattering 7. Conclusion