In this seminar, we will study how to understand toric manifold with its associated polytope. More specifically, we will use the moment map as a Morse function on the toric manifold. Next, if time allows, we will study surgeries on toric manifold: symplectic blow-up and symplectic cutting. The main reference of the talk is chapter 3 of Symplectic Toric Manifolds, 2001 by Ana Cannas da Silva.