Tableau is data visualization software (aka Business Intelligence, Analytics). It enables fast creation of static or interactive InfoGraphics, including charts and maps. It is designed for large businesses, with pricing per user per month.
Look for material written by a Tableau Zen Master, who have been selected based off knowledge and teaching. See Especially those by the Hall of Fame Zen Masters. For example:
The best way to learn Tableau is to utilize or re-create what other people have done. You can often download the workbooks for visualizations you see. Don't forget that some worksheets might be hidden. These sites have downloadable workbooks (look in the bottom right for the download icon (square with down arrow) and choose "Tableau Workbook". Note that .twbx files include the workbook (.twb) plus the data.
Get Web Connectors for Direct Import of Data: