I'm thinking about purchasing
PlaneTalk, but I have a lot of questions, of course

. I'm familiar with open chords, power chords, barre chords (of course), I know some scales like blues, major scale...
I was wondering what does PlaneTalk actually teach? It teaches you note names on every fret (or you need to know that), it teaches you how to do solos based on some new way (like, this and that sounds good), or something else

?
Thanks in advance