There are many more resources available for each technology, but we've listed a few to help you get started!
https://www.geeksforgeeks.org/html-basics/
https://developer.mozilla.org/en-US/docs/Web/HTML
https://developer.mozilla.org/en-US/docs/Learn/HTML/Introduction_to_HTML/HTML_text_fundamentals
https://www.w3schools.com/html/html_basic.asp
http://www.goodellgroup.com/tutorial/chapter1.html
https://www.geeksforgeeks.org/css-introduction/
https://developer.mozilla.org/en-US/docs/Learn/CSS/Introduction_to_CSS/Syntax
https://www.w3schools.com/css/css_syntax.asp
https://htmlcheatsheet.com/css/
https://developer.mozilla.org/en-US/docs/Web/JavaScript
https://www.tutorialspoint.com/javascript/
https://htmlcheatsheet.com/js/
Wes Bos Drum Kit tutorial: https://www.youtube.com/watch?v=VuN8qwZoego Drum Kit Files: https://github.com/wesbos/JavaScript30/tree/master/01%20-%20JavaScript%20Drum%20Kit
https://www.tutorialspoint.com/python/index.htm
https://codeclubprojects.org/en-GB/python/
https://hourofpython.trinket.io/from-blocks-to-code-with-trinket#/blocks/meet-tina
https://www.tutorialspoint.com/python/python_basic_syntax
https://jakevdp.github.io/WhirlwindTourOfPython/02-basic-python-syntax.html