WordPress org has a “Learn” courses area that has a large number of learning tracks. This is a good resource to bookmark or remember for when people ask for good courses.

This article on the developer blog has a good overview of what JSON schema is and it also lists and explains the several ways that JSON schema is used in WordPress. It is worthwhile reading this article for orientation purposes for power users even if you aren’t a developer.

In this video Brian Coords show the improvements to the Block Binding API. In the first half of the video he shows how it looks in the editor and in the second half he shows the code needed to implement it.

Mark Westguard was recently on the Do the Woo show and he shared some good points that plugin developers launching a product will find useful.

The theme.json file, which is used in block and hybrid themes, is getting a bump to version 3 in order to account for some default font and spacing size changes.

WordPress has an API for storing and loading options, the Options API. Some changes to the Options API are coming with WordPress 6.6. One of the settings when creating an option is if the option should be auto loaded with each page. Up until now, the default when an option is created was “yes” to auto load it. However, a large amount of auto-loaded data can hurt page performance. The default is being changed to “null” and a ceiling on the size of auto-loaded options is being introduced. These and other changes are discussed in this article on the make blog.

Here is a comprehensive tutorial on creating a block from scratch. It’s fairly advanced and touches a lot of areas. The tutorial is from Ron Huereca and he chose a Gravatar block as an example to demonstrate REST calls and saving attributes.

Here is a developer resource – A searchable directory of WordPress filter and action hooks created by Tiffany Brown.

A minimalist plaintext WordPress theme. This one looks like a Classic theme. I imagine you can do something similar with block themes.