Amazing idea and great implementation!
The shortening of the attention span of the average person and overall lack of time in our busy career lives (plus the constant need and want of self-improvement) often makes it difficult to learn and upgrade one's skillset, both soft and hard skills.
Tools like Junto (show me another one like it though, I dare you) solve this issue, by making learning more efficient and time-saving.
I hope this idea grows into something huge. Good luck!