TITLE: Textbook for Etale Cohomology
QUESTION [32 upvotes]: What is the best textbook (or book) for studying Etale cohomology?

REPLY [2 votes]: Here are some extra references:

Amazeen, Étale and Pro-Étale Fundamental Groups;
Belmans, Grothendieck Topologies and Étale Cohomology;
Bergström--Rydh, Étale Cohomology Spring 2016;
Conrad (?), Étale Cohomology;
Hajj Chehade, Sheaf Cohomology on Sites and the Leray Spectral Sequence, Chapter
3;
Klingler, Étale Cohomology and the Weil Conjectures;
Kunkel, Étale Fundamental Group: An Exposition;
Laskar, Étale Cohomology;
Puttick, Galois Groups and the Étale Fundamental Group;
Robinson, Étale Cohomology;
Sarlin, The Étale Fundamental Group, Étale Homotopy and Anabelian
Geometry;
Szamuely, Galois Groups and Fundamental Groups, Chapter 5;
The Stacks Project Authors, Étale Cohomology;
Yang, Fundamental Groups of Schemes;
Zarabara, Étale Cohomology over $\mathrm{Spec}(k)$.