Data Analysis is good domain to work and we will be working on different new scenarios daily...
Tableau is Next generation BI technology where we can expect better career growth..
Please go through the Training's provided by the tableau software..
You can get all the tutorial and course content from there itself
Go through the all the on-demand videos,Register for live webinars..
Go through the whitepapers and knowledge base for the tutorial...
Install the Tableau desktop and start practicing...Happy Analysing..
let me know in case of any help required...