Yes it is different for physical and digital products somehow so to speak!
And I think I'm not the best person to answer how important it is for you to incorporate sometime! That would be some internet marketer from your own country.
but as I have said, don't worry too much about it!
-Lakshay
(If you need any help with marketing of your product, please feel free to get in touch with me! I'd be glad to assist if I can)