Rule 11: Always check your sources.
I checked to see if this was really by Cage because so many things floating around the net are misattributed. All too often, the attribution turns out to be wrong, and the supposed source clearly serves more as a marker of wisdom than anything else. I recently came across a "Chinese proverb": "A bird does not sing because it has an answer. It sings because it has a song." But that's Maya Angelou!
In addition, these rules don't sound very much like Cage to me. Even if it does turn out to be something that quotes him (rule 10) and that he adopted as his own, the rules don't contain enough randomness to be typically "Cageian."
Still, it's a good list. I especially like Rule 1, which emphasizes that the place where learning takes place is important, as well as the role of trust in the teaching process. And Rule 9, which emphasizes the role of pleasure in learning. But perhaps Rule 7 is most important of all: "if you work it will lead to something."