Suggestion for the library: Open collection or take lesson checkbox

I know that you putted a lot of effort in improving the library. You developed the small “i” that is shown when you hover over the lesson picture in the library. But I think this function is not obvious. I think new members will have no idea that it is important. My suggestion: Make a checkbox on the sidebar that allows users to choose what happens when they click on the lesson:

  • Open collection (with preview)
  • Take lesson

By the way, it is great to have the view back of all lessons in one collection without pages when you click on the “i”. Much more interesting would be if there were no pages on the result page of “go to collection” (example: English LingQ Podcast 1.0 - LingQ Language Library)
I would like to have this because than I’m able to sort by number of unknown words.