Yes, definitely Tableau is good for a professional perspective and there are many reasons for this. If you will look at the current industry situation you will find Data Science is the hottest technology and Tableau is used extensively in this field for data visualization and many other works, so Tableau is very good for professionals.
Preparing for Tableau Interview then go through Tableau Interview Questions or to learn Tableau then you must take up the following Tableau Training. If you want to learn Tableau in less time then you must watch the following Tableau video tutorial.