Part I: Foundation of magnetism.- Basis of magnetism.- Magnetism of atoms.- Magnetism of solids.- Exchange interaction.- Magnetic anisotropy.- Magnetostrictive effects.- Magnetic domain.- Micromagnetism.- Part II: Magnetic materials.- Soft magnetism.- Hard magnetism.- Part III: Spintronics.- Magnetoresistance effect.- Tunnel magnetoresistance effect.- Magnetoresistive random access memory (MRAM).- Technologies that accompany the development of spintronics devices.