Most BI professionals come from technical or business backgrounds, but creating an informative and user-friendly report requires not only good data models and formulas - it also requires a bit of design knowledge.This helps avoid burning readers’ eyes with contrasting colours, sucking them into a black hole of confusing menus, or making them feel like they are on a pop news site where all the ads compete for attention and the purpose of the page is deeply obscured.In this talk, Martynas Jočys offers a crash course on the essentials of design that everyone doing anything visual, including dashboards, with shapes, including rectangles also known as bar charts, for people, who like nice colours and cat pics, should know.The session covers the basics of colour, Gestalt principles, and UX, helping report readers finally say, “Now I understand what I see!” with satisfaction.