After having that little flash window in the right hand corner grabbing my unwanted attention multiple times, I bought this for my iTouch. $4.99 app. Abandoned after 1st chapter so I won't comment on the book only the presentation which I found silly. It's possible it would work better on a PC, but I didn't want to spend more money to try it out. Another annoying thing was that the book did not resume where you had left off. I hate that. The video seemed to add little to the content. I suppose the idea is interesting, but it just didn't work here -- for me anyway, but then I'm old and decrepit.