Étale Cohomology is one of the most important methods in modern Algebraic Geometry and Number Theory. It is a large area with a large number of applications. The book gives a quick and easy introduction into Étale Cohomology. It is ample in its arguments but wisely restricted in the choice of material.
Günter Tamme
Abelian Varieties Abelsche Varietäten Derived Functors Derivierte Funktoren Garben Grothendieck Grothendieck Topology Sheaves Topologien cohomology cohomology theory etale Cohomology homological algebra homology number theory