It's just you and a code editorNo videos, no lengthy texts.
Each lesson has a big upfront comment. It explains what is the lesson about, how a particular feature works or what you have to do.
Then, there is a piece of code that shows the feature in action. The code executes on the fly and is editable. You should tinker with it to better understand how it works.
Finally, there are exercises, use the knowledge gained in the lesson to solve them.