David Tong: Lectures on Quantum Field Theory
Coupling light and matter. Feynman rules. Scattering amplitudes. Pages 135-The End.
Full playlist can be found here - https://www.youtube.com/playlist?list=PLaNkJORnlhZlVkrpQVvCTVvGAMIlXL88Y
These are videos of the lectures given at the Perimeter Institute PSI programme in 2009.
The lectures follow the printed notes which are available on the main quantum field theory webpage. Here - http://www.damtp.cam.ac.uk/user/tong/qft.html