In informatics, we often are faced with big data sets and how to make this data comprehensible. Here is an example from cartography. Beautiful graphics, highly usable. We can aspire this “data density” in our own graphics.
My favorite book crafting great information graphics from data, is of course Edward Tufte’s Visual Display of Quantitative Information. He talks about data density, sparklines, lots of cool stuff. AND he has an online course. I have been his disciple for years, and have ALL his books.
The only thing better than gathering and making sense of big data, is being able to explain it clearly to change minds and behavior.