Maybe you could make the Klingon course a little more deep in detail, with like voice speakers?
I am not the original poster, and I am happy with the current tree... But I am worried I will finish it too soon!
as for things to add...
missing conjunctions, joq/qoj comes to my mind, maybe a lesson dedicated to name/phrase conjunction
maybe a lesson music 2 on stringed instruments
geometry terms maybe
oddly, there are fewer military/space battle terms than I expected
Hi will199479! I have been at it for a couple of months and was more than surprised when I suddenly heard a few words . And I was pretty good at the pronunciation. I have been using an app: boQwI' klingonisch-Assistent. (On google play- for free and no ads!) It seems to be a German app. But, you can use English in the search and the translations are in English, too. I am not sure about the menu because mine is in German and I can't find a quick way to change it. You will need to download the Vorlesesoftware (text to speech). Give it a try. yIwaH!