How to create a "quiz" in Lichess Study?

Is there a For Dummies video guide to creating "quizzes" in Lichess Study?

I assume you're referring to interactive lessons. You can click the gear icon next to the chapter and select "Interactive lesson" for the analysis mode. After that it's pretty self explanatory.

Thanks - that was helpful, and non-obvious.

And now ... how do I "run the quiz"?

And can I add more "puzzles" in this "chapter," or is each puzzle its own chapter?

I know these are basic questions - there must be How To docs somewhere.

@StanFurd said in #3:

Thanks - that was helpful, and non-obvious.

You're welcome.

And now ... how do I "run the quiz"?

You can click the preview button in the lower right. For people who aren't members of the study, it will be interactive for them when they open it and they won't have an option to edit it.

And can I add more "puzzles" in this "chapter," or is each puzzle its own chapter?

Each puzzle is it's own chapter. Also note that it will only accept one correct move for each position. If you want to allow more than one correct move, you can install the Lichess Tools browser extension (but note that anyone viewing your study will also need it installed for that to work correctly).

I know these are basic questions - there must be How To docs somewhere.

If you click the info icon in the lower right, it will give you a tour, but it only explains some basic stuff. There is also this blog, but it doesn't mention interactive studies: https://lichess.org/@/lichess/blog/study-chess-the-lichess-way/V0KrLSkA