In the web page of [Uwe Jannsen](http://www.mathematik.uni-regensburg.de/Jannsen/) there are great lecture notes of (étale cohomology) courses. In particular:

Sommersemester 2015: Étale Kohomologie [Eng](http://www.mathematik.uni-regensburg.de/Jannsen/Etale-gesamt-eng.pdf)