The approach of Ripeti Con Me! is just the opposite of the traditional grammar-focused teaching method.
That’s why no grammar notes are included in the lessons.
I do provide some grammar notes outside the course on select topics, but they’re not part of this course.
If anything, you could investigate into grammar only after each lesson, not before.
Still puzzled? I’ll share a polyglot’s secret: I don’t study grammar. 😉