Do you have favourite music lessons (in my case guitar lessons) or music clinics? Do you think they are fully useful? Which are the ones whose resources you have exploited as fully as possible? I think many of them are beyond amazing: I've learnt a lot from Paul Gilbert's guitar lessons, I've learnt lots from Steve Morse. But I've been hooked on two lately, which are really different from each other: Guthrie Govan's (I strongly recommend watching his guitar lessons, for I'm of the opinion that he's revolutionised the current conception of rock music) and the one by the late funk Master: the sublime Ross Bolton's funk guitar lessons. What (guitar) lessons would you recommend?