ABCs of Systems Programming
God Bless America
IBM has released two Redbook series entitled the "ABCs of Systems Programming". One is a five volume set for OS/390 Systems Programming and the other is a 13 volume set. The stated goal of the volumes are: "to introduce the structure of OS/390, z/OS, and S/390 operating environment. The set will help you install, tailor, and configure an OS/390 operating system, and is intended for system programmers who are new to an OS/390 or z/OS environment."
These volumes, and more, can be found at http://www.redbooks.ibm.com or read the individual books at:
IBM z/OS Basic Skills Education (Free)
This series of short educational videos teaches you about the IBM Z environment. The IBM Z mainframe is essential technology of large enterprises handling critical data and services every second of every day. While the IBM mainframe initially transformed business during past decades, IBM Z mainframe technology advancements provide limitless potential to enable future business transformation.
ABCs of z/OS Systems Programming
Volume 2 z/OS Implementation and Maintenance
Volume 7 InfoPrint Server, LE, and SMP/E
Volume 8 z/OS Problem Diagnosis
Volume 9 z/OS, UNIX System Services
Volume 10 Intro to Z, LPAR, and HCD
Volume 11 Capacity planning, performance management, RMF, and SMF
Volume 12 WLM
Volume 13 JES3
ABCs of OS/390 Systems Programming (historical)
Something old that I ran across that is no longer available online:
IBM OS/390 Software Management Cookbook SG24-4775 - October 1996
IBM has made available the IBM Systems Journals electronically - check them out.
For the history buff check out this scanned copy of an OS/360 system chart.