General information on HTML:
How to start a HTML Document: https://prog.code.blog/2019/02/27/starting-a-html-document/
Tags: https://prog.code.blog/2019/03/01/tags-2/
Ways to customize a HTML website: https://prog.code.blog/2019/03/13/html-stylization/
HTML Reference – also has some tutorials on HTML, CSS, and other things under the technologies category in the top left. https://developer.mozilla.org/en-US/docs/Web/HTML/Reference