HTML basics: https://developer.mozilla.org/en-US/docs/Learn/Getting_started_with_the_web/HTML_basics
CSS basics: https://developer.mozilla.org/en-US/docs/Learn/Getting_started_with_the_web/CSS_basics
HTML tables: https://developer.mozilla.org/en-US/docs/Learn/HTML/Tables
HTML forms: https://developer.mozilla.org/en-US/docs/Learn/Forms/Your_first_form
Alternate resource to learn HTML and CSS together while building a website: https://learn.shayhowe.com/html-css/