Notes by Davide Lombardo from a 2019 course.
Notes from a 2006 course, revised in 2012.
Notes for part of a 2011 course on schemes, with a last section on Serre's GAGA theorems added in 2016.
Notes for part of a 2010 graduate course.
These are notes from part of an earlier course (1999/2000) on fundamental groups, treating the basic ramification theory of Dedekind schemes. This material was not incorporated in my book on the subject and has not been revised.
This also comes from notes for an old course (1999/2000) on fundamental groups, not incorporated in my book on the subject.