This article by Russell Beswick is an advanced developer discussion of Web Components and Shadow DOM. It will be of value to those working with Web Components and Shadow DOM, but for others it may not be of much interest.

Much of this is not ready for prime time, but it is interesting to see changes to the HTML specs which may be usable in the future.

Kevin Powell, a CSS expert and effective teacher, has released a free course on HTML and CSS. These are two of the fundamental languages behind all websites, not to mention all page builders and Gutenberg.

This YouTube short by Kevin Powell shows how to use the HTML datalist element to improve your forms.

Kevin Powell is a great teacher and he is starting to release tutorials for beginners each Tuesday. Here is a beginner tutorial for learning HTML.