Some (old) lectures notes:

• A master course on algebraic stacks (Toulouse 2005). cours1 cours2 cours3 cours4 cours4-2 cours5 cours6 cours7 cours8 cours9
• G-Theory of Deligne-Mumford stacks (Bologna 1999). PDF
• Lectures on non-abelian cohomology (MSRI 2002). PDF1 PDF2
• Homotopical algebraic geometry (Essen, 2002). PDF
• Homotopy types of algebraic varieties (Palo Alto 2004). PDF
• Tamsamani categories, Segal categories, and applications (IMA, 2004). PDF
• Hall algebras in the derived setting (Luminy 2006, notes taken by P. Nicolas). PDF
• Mini course on Weil conjectures (Toulouse – March 2020).Cours-1.1 Cours-1.2 Cours-2 Cours-3 Cours-4 Cours-5 Cours-6