  These lecture notes are intended to serve as an introduction to applied
AdS/CFT with numerics for an audience of graduate students and others with
little background in the subject. The presentation begins with a poor man's
review of current status of quantum gravity, where AdS/CFT correspondence is
believed to be the well formulated quantum gravity in the anti-de Sitter space.
Then we present the basic ingredients in applied AdS/CFT and introduce the
relevant numerics for solving differential equations into which the bulk
dynamics collapses. To demonstrate how to apply AdS/CFT with numerics, we take
the zero temperature holographic superfluid as a concrete example for case
study. In passing, we also present some new results, which include the
numerical evidence as well as an elegant analytic proof for the equality
between the superfluid density and particle density, namely $\rho_s=\rho$, and
the saturation to the predicted value $\frac{1}{\sqrt{2}}$ by conformal field
theory for the sound speed in the large chemical potential limit.
