[potato_mOWX2EVX]

Depends on the country.

Are in the USA?

Edit: Clarification, you can't download a Mainframe VM so you need access to a Mainframe for training.

[andyjohnson0]

Programming in COBOL does not require a mainframe.

[potato_mOWX2EVX]

You're right.

I tend to think about what you need to learn to actually work in a IBM Mainframe environment which is greater than just learning the language.

[cromulent]

I think you could use Hercules.

http://www.hercules-390.org