If I want to create lessons for people who are studying Spanish (I am a native Spanish speaker and am learning English), do I have to choose the Spanish language first as if I was learning Spanish or I just choose to import a lesson in my English section and then I choose the Spanish tab for the lesson?
You have to choose Spanish first and then you import the lesson into the Spanish slot.
You can actually click on “Import” in any language and then select Spanish as language of the lesson on the top of the page.
Ah, that is a new feature.