Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Very useful video supplement

I really liked the video supplement for the book. At first when I read the CAGED system from his book, I could not understand the concepts well. But, as I kept watching the video again and again, I realized the beauty of CAGED system and how useful it is when you practice it with the pentatonic scales/major scales. Desi Serna is an excellent teacher and I would love to subscribe and watch more videos and podcasts.