how to became a professional digital marketer (in free of cost)

in this content i will talking about a professional digital marketer . so in every one life there is one ideal personality to whom we choose to follow. so i get inspired from  very people like matthew lepre, ankur agarwal, etc . i see a video of ankur agarwal from which i started digital marketing.
        so in this article i attach the full course of digital marketing for free which is published by ankur agarwal which really helps you to learn digital marketing in free of cost.
 here are 21 free lessons of digital marketing:

https://www.youtube.com/watch?v=wfOp0lsCXAY&list=PLifnQOsGyOSRMYndHku6pNlLYckbBuOGU

click this link and checkout all 21 free videos of digital marketing