想学 Tableau的同学注意了，注册Coursera上Duke University Tableau的课程，送tableau软件半年激活码。可以免费只听课。
https://www.coursera.org/learn/analytics-tableau/home/welcome

Data Visualization and Communication with Tableau

Sep 19, 2016 - Oct 31, 2016Duke University


To get the product key by the below instructions


https://www.coursera.org/learn/analytics-tableau/supplement/uK8VJ/written-instructions-to-install-tableau-desktop