1. Introduction; 2. Magnetic Gibbs free energy; 3. Basic micromagnetic equilibrium conditions; 4. Domain walls in crystalline and amorphous solids; 5. Interaction of domain walls with defects; 6. Coercivity of modern magnetic materials; 7. Statistical theory of domain wall pinning; 8. Law of approach to ferromagnetic saturation and high-field susceptibility; 9. Microstructure and domain patterns; 10. Magnetic after-effects in amorphous alloys; 11. Magnetorestriction in amorphous and polycrystalline ferromagnets; 12. Micromagnetic theory of phase transitions in spatially disordered spin systems; 13. Computational micromagnetism of thin platelets and small particles; 14. Computational micromagnetism of dynamic magnetization processes; Index.