Is there html and css intermediate courses?

Question

Where do I get to learn the meta charset and link rel stuff at the begining of others code and html5 questions I answer in challenges

Answer 1

No, there aren't intermediate courses for html and css.

https://www.w3schools.com/html/html_charset.asp
https://www.w3schools.com/tags/att_link_rel.asp
https://developer.mozilla.org/de/docs/Web/HTML/Reference/Elements/link