I am enjoying your course and thank you for the great effort.
I’ve discovered an error tho, and thought you might like to correct it.
At Level 1 Perfect Present plus Past Participle Endings
You have:
ha Perfect, Present, Third, Singular
and
han Perfect, Present, Third, Singular (which are the same.)
it should be han Perfect, Present, Third, Plural, I believe.
Hope this helps you
again, thank you
Julio502