  We present an overview on some basic properties of massive neutrinos and
focus on their flavor issues, including the mass spectrum, flavor mixing
pattern and CP violation. The lepton flavor structures are explored by taking
account of the observed value of the smallest neutrino mixing angle
\theta_{13}. The impact of \theta_{13} on the running behaviors of other flavor
mixing parameters is discussed in some detail. The seesaw-induced enhancement
of the electromagnetic dipole moments for three Majorana neutrinos is also
discussed in a TeV seesaw scenario.
