Blazars, including BL Lacertae objects and flat-spectrum radio quasars, are the extreme subset of active galactic nuclei and are characterized by strong and rapid flux variability across the entire electromagnetic (EM) spectrum from radio to gamma-ray, high and variable radio to optical polarization and non-thermal Doppler boosted emission from the relativistic jet pointing close to the line of sight of the observer. TeV (Tera electron Volt) blazars are a growing subclass of blazars. Since the first detection of TeV gamma-rays, in 1992, from Mrk 421 by the Whipple Observatory, a number of investigations are carried out to explain the extreme nature of these blazars. Flux and polarization variability studies of blazars play an important role in understanding their geometry, radiation mechanisms and jet dynamics, while by performing spectroscopic studies we can estimate their distances. In this talk, I'll talk about flux variability, polarization and spectroscopic studies of TeV blazars that can be performed using the observing facilities of ARIES.