Data Visualization Fundamentals
Learn how to choose the right chart, design clear visuals, use colour accessibly, and communicate data findings honestly.
Eight lessons on choosing, designing, evaluating, and communicating with charts and dashboards. Free, beginner-friendly.
- Difficulty: Beginner
- 8 lessons reading
- No prior technical experience required
These are suggestions, not requirements.
Lessons
Why Visualize Data?
Understand the purpose of data visualization and when a chart communicates better than a table.
Read Lesson →Choosing the Right Chart
Learn how to match chart types to the question you are answering — comparisons, trends, distributions, and relationships.
Read Lesson →Designing Clear Charts
How to use titles, labels, axes, scales, and whitespace to make charts readable and unambiguous.
Read Lesson →Colour and Accessibility
Use colour purposefully, ensure sufficient contrast, and design for colour-blind accessibility.
Read Lesson →Showing Trends and Comparisons Honestly
How to present time series, baselines, and comparisons without misleading your audience.
Read Lesson →Dashboards and Key Metrics
Understand dashboard purpose, layout, KPIs, and how to avoid metric overload.
Read Lesson →Data Storytelling
How to structure a data narrative — audience, question, context, sequence, and honest evidence.
Read Lesson →Reviewing and Improving Visualizations
A practical checklist for accuracy, clarity, accessibility, and source attribution before publishing.
Read Lesson →