It's a great ongoing course that offers amazing intuition into scheme theory. We're divided into "working group(oid)s" where we discuss the mathematics and solve the weekly homework assigned by Ravi. Best of all, anyone [all over the world] can join in on the fun! You get added to a discord and a zulip group, where all the discussion happens.
My favourite article about Grothendieck is the one titled "The Grothendieck-Serre Correspondence": https://webusers.imj-prg.fr/~leila.schneps/corr.pdf
This article describes both the mathematics, and the lives of Grothendieck and Serre through their exchange of letters. It's powerfully written, and provides great insight into both the mathematics and the two as people. The last line of the article is absolutely beautiful.