you know there is a masterclass of garry . but now it free on youtube .someone had recorded it and uploaded on youtube...i had watch it full.you people alos like it...https://youtu.be/xLvfeBmuV4U
It's good but he speaks too slowly and he makes too many pauses: "uuhh, well, you know, because, well, you know, if you take the piece, you know, uuh..., yeah, you know". Kinda annoying.