Program for AY 2020-21 is here. Peter Abramenko's (handwritten) notes on group cohomology can be found here. Jinbo Ren's notes on Azumaya algebras can be found here. 

Program for AY 2021-22 is here. Notes from this year can be found here. 

Notes for AY 2022-23 are here. 

Topics in AY 2023-24 will include etale cohomology and the Brauer group. We will begin with a review of Deligne's Arcata Lectures. An introduction to the Brauer group can be found here.  Milnor's seminal paper Algebraic K-theory and Quadratic Forms can be found here.