Which lesson of HTML course is most essential for web development?

Answer 1

To become a web developer, you need to start by learning HTML, CSS and Javascript. jQuery would be useful too. So in my opinion there is not a specific course that is "essential". Someone who wants to become good at it should do all of them and look into it even further later. 😀(but you don't seem to be a beginner lol)

Answer 2

You can try freecodecamp.org