I am sharing some important points which you can follow to learn Tableau. The first thing is to look up for a tableau introduction video. You can watch the below-mentioned video.
After that, you can then make a report or an excel file from your work. Install the tableau public application on your laptop/desktop/. Now, it is the time to start creating the report in tableau, before taking help from anywhere, try by yourself at least three times. You can also take up any online Tableau training Course to learn it. Or you can read Tableau blogs and tutorials on Tableau.