Use test-cases to validate your design with stakeholders | Ambiguity vs Information

Data Visualization
www.colourlovers.com
lifehacker.com
blog.kissmetrics.com
Designing Charts and Graphs: How to Choose the Right Data Visualization Types
Color Theory for Designers, Part 1: The Meaning of Color – Smashing Magazine
Top 5 BI Dashboard Best Practices In The Digital Age
Gestalt principles - Scholarpedia
Improving data visualisation for the public sector
IBCS - International Business Communication Standards
Data Visualization with No Results? Could vs Should - InFocus Blog
Building Horizon Graphs in Power BI
The Art of Data Storytelling -- Pixar Style
Flow map
Data Storytelling: The Ultimate Collection of Resources II
10 Sales Graphs and Charts Every Manager Should Have
Edward Tufte’s “Slopegraphs”
11 Sales Report Examples For Daily, Weekly or Monthly Reports
Power BI visualization best practices - SQLBI
8 Tips For Asking The Right Data Analysis Questions
The Best Data Visualizations of All Time - Including Interactive Examples
Power BI Custom Visuals Class (Module 58 – Drilldown Choropleth) – Devin Knight
Using Color Gradients to Improve Your Visuals – Victor Rocca's Blog
My Top 5 Power BI Visual Design Practices: Transforming Good to GREAT - PowerPivotPro
Create High-Impact Data Visualizations: Nine Effective Strategies
Six Essential Features for a Data Storytelling Solution — Juice Analytics
An Introduction To Data Dashboards
New Series of Time Series: Power BI Custom Visual (Part 4) | RADACAD
An interactive to explain histograms, for normal people
Data Viz Project | Collection of data visualizations to get inspired and finding the right type.