I've always been a big fan of IBM Red Books. Back in the good old days when I worked as a Sysprog, the Red Books were always my favorites. Whenever we got something new in to install, the first thing I would do would be to grab up the relevant Red Books and scan through them cover to cover.
A few years back, when I first started working for IBM, I had the chance to contribute to a Red Book. It was a fun and educational process (and intense too).
Here are the links for some relevant z13 Red Books. Enjoy:
This is the z13 Redbooks landing page with a list of all our Redbooks deliverables with links:
Here's the full list of the deliverables (Redbooks, Redpapers, and PoVs).
IBM z13 Technical Introduction, SG24-8250
Securing your Mobile Mainframe, REDP-5176
z Systems Simultaneous Multithreading Revolution, REDP-5144
SIMD Business Analytics Acceleration on z Systems, REDP-5145
Enhancing Value to Existing and Future Workloads with IBM z13, REDP-5135
z/OS Infrastructure Optimization using Large Memory, REDP-5146
IBM z13 Technical Guide, SG24-8251
IBM z Systems Connectivity Handbook, SG24-5444
Get More Out of Your IT Infrastructure With IBM z13 I/O Enhancements, REDP-5134
IBM z13 Configuration Setup, SG24-8260
IBM z Systems Functional Matrix, REDP-5157
Reliable Analytics by Using IBM z13 , TIPS1259 http://www.redbooks.ibm.com/abstracts/tips1259.html?Open
Ultimate Security with the IBM z13, TIPS1257 http://www.redbooks.ibm.com/abstracts/tips1257.html?Open
IBM z13 for Cloud, TIPS1262 http://www.redbooks.ibm.com/abstracts/tips1262.html?Open
IBM z13 for Mobile Applications, TIPS1260 http://www.redbooks.ibm.com/abstracts/tips1260.html?Open