Thanks, Jerry. I do try to include a quiz with every video, and they're down near the bottom of the lesson page. I'm glad you noticed them.

One of the many items on my very, very long to-do list is turning those text quizzes into a proper interactive quiz system where you can click through the questions and get scored automatically. Alex built something along those lines a while back and did a great job. Integrating his version into my site would probably be more work than building a new one from scratch, so it remains on the list.

Also, while creating all those quizzes, I learned that "quizzes" has two Zs. Apparently I had been spelling it wrong for years, too. :)

See, not only do I learn from your videos, but also from your replies lol