This lecture covers the dynamics of astrophysical fluids and plasmas, including topics such as neutral fluids, ideal fluids, compressible fluids, turbulence, and numerical methods in hydrodynamics. It also delves into collisionless plasma processes, magnetohydrodynamics (MHD), MHD waves, and instabilities. The instructor discusses the construction of kinetic theory, joint probability functions, and plasma oscillations. The lecture concludes with the measurement of cosmic magnetic fields using Faraday rotation.