Below are some of my favorite blogs for viz inspiration and advanced functionality how-to's:
hint: (click on the green text or images for links)
One of the most prolific contributors to the Tableau Blog who always has great content is Andy Cotgreave.
The Flerlage Twins (Kevin and Ken) are both Tableau Zen Masters and regularly publish amazing content.
VizWiz is Zen Master Andy Kriebel's blog that houses an impressive amount of formatting and functionality tricks. Andy also runs Makeover Monday!
Data + Science is Zen Master Jeffrey Shaffer's blog that showcases TabCharts (an online library for creating different chart types in Tableau ), Tableau Tips, and a Tableau Reference Guide
Ryan Sleeper is a Tableau Zen Master and author of Innovative Tableau (O’Reilly 2020). His blog offers a wealth of tips and Tableau training.