The following tutorial is meant for the student to get used with basic concepts of Roassal. At the end of the tutorial, the student should be able to know how to use Roassal to visualize object's metrics and relationships by using shapes, a layout, color, size and interactions. He should also be able to know where to find more information to resolve doubts and to learn more about the engine. The tutorial is split in three parts: 1) Hand's on session, 2) Examples of Roassal's builders and 3) Pointers to find more information. Let's start.