This tutorial presents the Ssreflect extension to the Coq system. This extension consists of an extension to the Coq language of script, and of a set of libraries, originating from the formal proof of the Four Color theorem. This tutorial proposes a guided tour in some of the basic libraries distributed in the Ssreflect package. It focuses on the application of the small scale reflection methodology to the formalization of finite objects in intuitionistic type theory.