Hi Sandra,
I just started the course a couple of days ago and have seen a few things that can be improved and will be very helful, at least to me.
1- There is no way to know how much is left to finish a lesson. For instace, Unit 2, Lesson 1 has 24 pages. I whish there was a page counter somewhere so I know I am in page 20/24. This would help me plan my time better.
2- For Unit 2 Lesson 1, I scored 22/23 of the lesson's questions. I'd love to see which one I failed. I clicked the "Review Lesson" link but it only takes me to the last question of the lesson.
3- The questions that require you to type the full word in the exact same format and context it apears in the paragraph above I don't find them helpful. They dont even provide a "Correct" or "Incorrect" result.