I get that there might be a reason for having this as a devoted lesson, but it's really kinda hard to understand after doing several lessons in a row. It is, however, a fantastic xp farm for leagues.
I don't think they should have included "letter names" in the lessons. It's kind of pointless.
It should be more useful now that we have audio -- although the issue that Duolingo will attach the Qay audio to qay and vice versa is kind of annoying.