A pedagogical review of color superconductivity in dense QCD was given. In some ways, color superconductivity is like that of BCS, in other ways not. It differs in that the gap is exponential not in one over the coupling constant squared, but one over the coupling, due to a Sudakov type logarithm (scattering in the forward direction is enchanced). It is similar in that the temperature dependence is identical. Lastly, it differs in that higher spin gaps are only suppressed by a pure number, not an exponential.