Well, great poker players won't share their courses for free.
It's another way of them making money, so, if they will have some interesting courses. They can give it for free but it's like that 1-2 chapters only while the rest.
They will be the paid ones like if it's composed of 10 chapters.
That's the strategy, we know that he won't share it for free but he will offer his product to buy because the toturial he shares is not complete, actually gamblers will not give his secret trick because they have high profits from that strategy trick. So I'm sure he will offer ebooks and videos of paid courses but I would never be interested in taking that course.