Have you seen function like add_filter() or add_action() scattered across your Theme files? They are called Hooks and we will learn what exactly those are.
Creating a custom Gutenberg block isn't an easy feat especially if you are not comfortable with JavaScript. We will you guide you slowly through the process
There are a lot of plugins to disable Gutenberg editor. But the code to disable it is actually very short and simple. So no need for plugin, just add this snippet in…