My experience has been that I never fail to make progress whenever I encounter something I didn’t know or was weak in. The system offers you plenty of practice problems, at just the right level, to make sure you master the material before moving on to material that builds on the previous lesson.
Aggressively positive? Maybe. I have been a paying customer since october and very happy with the results.
Aggressively positive? Maybe. I have been a paying customer since october and very happy with the results.