Introduction to IBM Mainframes

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 or read the individual books at:
IBM z/OS Basic Skills Education (Free) This is a free online education from IBM that looks very worthwhile for both the new to z/OS systems programmer and the old timer looking to refresh their skills (or learn something new)
Check out numerous free classes from IBM and then challenge yourself with the Quiz.
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
For zNextGen and others who want an Introduction
ABCs of OS/390 Systems Programming (historical)
OS390 Software Management Cookbook SG24-4775 - 1996.pdf
IBM has made available the IBM Systems Journals electronically - check them out.
Another historical item
Last modified 9mo ago