The 'Czar of Goju',  or 'Mr. Goju' as he is affectionately called teaches so much in these three videos. Including the empty hand forms and a special DVD on Sanchin and yet another on Tensho. These DVDs also have the extremely talented Paul Enfield demonstrating the empty hand katas of Goju.  Making these 3 DVD’s must have for any and all Goju student! 

 https://www.youtube.com/watch?v=xQCBJPsWoDI