Twelve lessons, split into two short tracks rather than one long course, each one pairing its written guidance with a narrated version, an interactive tool or a short quiz. Nothing requires an account, and no lesson strictly depends on having finished the one before it, though each track is built in an order that makes sense to follow.
Two tracks, each usable on its own
The first track covers charts and slides directly: picking the chart type that actually answers a given question, recognising the handful of tricks, a truncated axis, a missing legend, a 3D pie, that make a chart misleading, and building a slide that carries one idea instead of six. The second covers reading and building reports: finding where a long document’s actual argument sits, what an executive summary is supposed to do differently from an introduction, what a stated margin of error does and doesn’t claim, and how document design choices, contrast, repetition, alignment, change whether a report actually gets read. Most lessons in both tracks pair their written guidance with an interactive tool, a game or a narrated audio version; a smaller number are marked as a full guide instead, running longer and covering their topic in more depth without a paired tool of their own.
A suggested order through the charts and slides track
The charts track runs in six steps, each building on roughly what came before: Which Chart Should I Use? covers chart types by purpose first, followed by the Chart Chooser tool for a faster, interactive version of the same decision. From there, Spot a Misleading Graph covers the common ways an honest chart type still gets drawn dishonestly, and Tell a Story With Data moves from single charts to structuring a finding across several of them. The track closes with two lessons on slides specifically: the Slide Design Checklist, built from the 6x6 and 10-20-30 rules, and Assertion-Evidence Slides, a headline-and-evidence structure backed by research out of Penn State.
A suggested order through the reading reports track
The reports track opens with How to Read a Report, a section-by-section guide to a report’s structure worked through against two real reports start to finish, followed by How to Read an Annual Report for the more specific structure of a 10-K or a UK strategic report. Executive Summary Examples and Margin of Error Explained each dig into one recurring section or one recurring number in more depth, and the track closes with two lessons on making a document readable rather than just reading one: Document Design and Readability and the Accessible PDF Checklist, on what tagging a document actually does and how to test it. Every lesson in both tracks ends with a short quiz checked instantly in the browser, with an explanation attached to each answer rather than a bare score.