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by lboc 1702 days ago
Try this for a bunch of free z courses (with real machine access for labs)

https://www.ibm.com/training/

I've done 4 or 5 including z/OS and COBOL.

There's also:

https://www.ibm.com/it-infrastructure/z/education/zxplore

Which appears to be the replacement for the Master the Mainframe program. Includes real machine access.

Although it's usefulness in comparison to real z/OS access is debatable, you might also check out the TK4- system which is an old MVS packaged along with the Hercules emulator. A lot of stuff hasn't changed in z/OS, but a lot has.

http://wotho.ethz.ch/tk4-/