As the world moved online in the time of this pandemic, we got a gem.
Quantum Field Theory 1 (QFT-1) by Ashoke Sen
Video Lectures: https://www.youtube.com/playlist?list=PLt4li39O1V1WGB_mI3S7ia1GbnJLOf8t1
Lecture Notes: https://www.hri.res.in/~sen/QFT1_lectures.pdf