  The current status and some perspectives of the phenomenology of massive
neutrinos is reviewed. We start with the phenomenology of neutrino oscillations
in vacuum and in matter. We summarize the results of neutrino experiments using
solar, atmospheric, reactor and accelerator neutrino beams. We update the
leptonic parameters derived from the three-neutrino oscillation interpretation
of this data. We describe the method and present results on our understanding
of the solar and atmospheric neutrino fluxes by direct extraction from the
corresponding neutrino event rates. We present some tests of different forms of
new physics which induce new sources of leptonic flavor transitions in vacuum
and in matter which can be performed with the present neutrino data. The aim
and potential of future neutrino experiments and facilities to further advance
in these fronts is also briefly summarized. Last, the implications of the LSND
observations are discussed, and the status of extended models which could
accommodate all flavor-mixing signals is presented in the light of the recent
results from MiniBooNE.
