Dwarf Galaxies in the Local Volume
  We review observational data about a sample of Local Volume objects
containing about 1000 galaxies within 11 Mpc of the Milky Way. Dwarf galaxies
with stellar masses $M_*/M_{\odot} < 9$ dex make up 5/6 of the sample. Almost
40% of them have their distances measured with high precision using the Hubble
Space Telescope. Currently, the LV is the most representative and least
selection-affected sample of dwarf galaxies suitable for testing the standard
$\Lambda$CDM paradigm at the shortest cosmological scales. We discuss the H II
properties of dwarf galaxies in different environments and the star formation
rates in these systems as determined from $FUV$ - and H$\alpha$-survey data. We
also pay certain attention to the baryonic Tully-Fisher relation for low-mass
dwarf galaxies. We also point out that LV dwarfs are important `tracers' for
determining the total masses of nearby groups and the nearest Virgo cluster.
