Readit NewsVisiData makes it possible to view a lot of data such as CSV, JSON, databases, etc. All the supported formats are listed in https://www.visidata.org/docs/formats/
There is a wonderful tutorial in https://jsvine.github.io/intro-to-visidata/
For CLI tools, I’m also a big fan of Miller (https://github.com/johnkerl/miller) to filter/modify CSV and other data sources.
The author provides a font patching tool, however mentions that it does not preserve existing ligatures.
This font can be useful when looking at large numbers. I've used it with successfully with Visidata in sheets with large numbers.
https://www.amazon.com/Parasite-Rex-Bizarre-Dangerous-Creatu...
Atul Gawande is the author of several books, the most familiar being "The Checklist Manifesto"
I hope he'll return to writing.
Though I think it is possible to get a lot done with VisiData only knowing a handful of commands/operations.
I think that the Jeremy Singer-Vine tutorial is a great starting point: https://jsvine.github.io/intro-to-visidata/
Also, the VisiData developer Saul Pwanson has a YouTube playlist listing all sorts of VisiData demos and step-by-step videos:
https://youtube.com/playlist?list=PLxu7QdBkC7drrAGfYzatPGVHI...
I'll mention an alternative way to visualize Venn diagrams are UpSet Plots.
[1]: https://en.wikipedia.org/wiki/UpSet_plot [2]: https://upset.app/ -- points to multiple implementations.
I'm surprised no one has mentioned Robert Tinney the artist who illustrated many of the covers. His work is pretty amazing, and seemed to capture all sorts of interesting ideas.
I met him once at a computer show. I was in too much in awe that I didn't really talk with him, but was able to give him some praise for his artwork. Also, I bought one of the t-shirts with his artwork.