The course is organized as a continuation of the Fall 1 course on “Monte-Carlo Methods in Statistical Physics”. It delves into specific topics including the Mean-Field theory for estimating critical exponents. Phase transitions and power laws in various models such as the Van der Waals gas, Ising model, and XY model (Heisenberg model). It also includes numerical simulations using the Metropolis/Wollf's algorithm for phase transitions in the XY model and renormalization groups for understanding criticality.