I'm a trainer at Tableau - we don't want the materials themselves published, for copyright purposes, but you can certainly create visuals from the data sets used and publish those visuals to Tableau Public - no problem. There's nothing proprietary about the datasets, as long as you are generating your own visuals (not the solutions from the manuals).
Make sense? Please let me know if you have any other questions!
Many thanks, Matt. Glad I asked.
I appreciate your guidance.
-- Steve Kobb