Subtitles???

I have a lot of friends that sure will love to buy this course, but I’m from brasil and your language is not the English, and will be amazing to have this the subtitles option , even that it was in English, would help alot, because we can’t translate, but since the people don’t understand anything about English is almost impossible do it just by earring.
I understand a couple of things, so it was easy to me, but i don’t speak English very well to.
So it’s a kind of suggestion.