  We review some basic flux vacua counting techniques and results, focusing on
the distributions of properties over different regions of the landscape of
string vacua and assessing the phenomenological implications. The topics we
discuss include: an overview of how moduli are stabilized and how vacua are
counted; the applicability of effective field theory; the uses of and
differences between probabilistic and statistical analysis (and the relation to
the anthropic principle); the distribution of various parameters on the
landscape, including cosmological constant, gauge group rank, and SUSY-breaking
scale; "friendly landscapes"; open string moduli; the (in)finiteness of the
number of phenomenologically viable vacua; etc. At all points, we attempt to
connect this study to the phenomenology of vacua which are experimentally
viable.
