This course will provide the students with a broad view on various physics phenomena occurring in tokamak plasmas. Practical aspects related to tokamak control and operation will also be provided. In this course, the students will be introduced to the physical models that are most used to describe the behavior of both natural and artificial plasmas, namely the theory of single particle orbits, the plasma kinetic theory and the fluid models, including the magnetohydrodynamic (MHD) approximation. A significant part of the course is devoted to study the physics issues associated to the MHD equilibrium and stability of tokamak plasmas.