Picture books with RubyIt is a primer on the Ruby language, so you will have a clear understanding of the fundamentals and concepts of the Ruby language through the creation of character-based programs. It is composed of keypoints that prepare important concepts that need to be learned in each chapter, a text that is structured to cover a single topic on the expanded two sides, examples of inputting specific commands and examples of execution examples. Ensure that people who are not caught, or who do not understand the class or object properly, can understand the Ruby language.