How Guitar Teaching Works? Teach Open + Bar Chords and Solos with one Backing Track!

How Guitar Teaching Works? Teach Open + Bar Chords and Solos with one Backing Track!:

Tips for Guitar Teachers. A single backing track from http://teachwombat.com that shows how you might teach open chords, bar chords, strumming patterns and soloing techniques?
Could you make extra money teaching guitar to beginners?