I have a book by him and have read some other stuff too. I find his exercises very difficult (like mental pushups), so I haven't done them much. It seems like they could be very good at training you not to overlook things or miss big parts of a solution space.
http://hplusmagazine.com/2012/02/06/rationality-training-call-for-a-global-approach/
Dr.Ziesche calls for more globally accessible rationality training. He seems supportive of existing efforts, especially us, but thinks it would be nice if rationality training was easily accessible to people other than educated westerners.