I have followed this step by step guide from 2016 to set up my droplet and domain.
how can i simply start a HTML page and start my own page and i want to know how to edit it later
Thanks so much for your detailed answer @bobbyiliev .
I finally figured it out and solved it.
For future reference:
First, and after creating the droplet, I configured the server:
Initial Server Setup with Ubuntu 18.0...