I delivered some lectures on supergravity in Student Talks on Trending Topics in Theory (ST4) 2020, held on Zoom. Video recording can be found on the ST4 channel on YouTube (for eg, here). Here are the slides from my lectures.
In ST4 2023 held at the Indian Institute of Technology Mandi, I delivered four lectures introducing on-shell methods for scattering amplitudes. Lecture notes can be found here.