As much as I love NECSI and Santa Fe Complexity Institute, the way the science is taught is a bit of a grab bag. Way too much emphasis on models that aren't widely applicable to engineering problems, like cellular automata.

Nassim Taleb's collaborations with NESCI are worth their weight, though, and W Brian Arthur out of SFI produces works that I consider actionable for CTOs to get a conceptual handle on their craft. UoM's Scott E Paige is also a good resource on Complex Adaptive Systems in a way that is more unified.

Came here to post Dynamics of Complex Systems. Just the information on renormalization groups and multi-scale behavior makes it worth the time. And it's Free!