According to Area 51, this site really needs some work. However, I recently started the duolingo course again, and every so often I have a question of why something is the way it is or how something works (more than the basic examples I get in the course.
So my idea is to create a duolingo tag that can be applied to anything that is a good answer for something in duolingo along with keeping track in the tag wiki or a meta post which answers to to which lessons.
For example, today I did Languages 1 and 2. Afterwards I wondered why a language name is always preceded by "La" even if you don't translate the "The" out of the phrase. After some searching (and ultimately starting to type a question and looking at the similar questions box) I found this Q/A that gave me the answer I needed.
If we could somehow mark that so the next person who has a question after finishing the Language 1 or 2 lesson, I think it might prove helpful.
Duolingo is a good place to start, but there are also several other apps and online courses that we could incorporate if this works out. Ultimately, this site will be most used by beginners who are just learning the language, the better we can adjust to that, I think the better the site will do.
In short, I want to create a duolingo tag and a list to show which answers might be most helpful for someone who just learned something and wants to go deeper.