Volume B' is a continuation of Volume A' and was written for the needs of the nationwide examined course Informatics taught in the 3rd grade of day and evening General High Schools. It consists of 6 chapters and has been organized into 15 lessons following the new teaching guidelines. 

Each lesson refers to a unit of the school book, initially presenting the corresponding theory with useful methodologies and examples, and then solved exercises and exercises to be solved. It also includes a revision guide with the theory of the lesson, suggested topics, as well as revision assessment criteria.