  In these lectures we present the motivation for dynamical electroweak
symmetry breaking and its most popular realization, technicolor. We introduce
the basic ideas of technicolor and its companion theory of flavor, extended
technicolor. We review the classical theory of technicolor, based on naive
scaling from quantum chromodynamics, and discuss the classical theory's fatal
flaws. Finally, we describe the principal attempt to correct these flaws, the
theory of walking technicolor.
