During yesterday's most excellent MainframerZ Meetup, one of our speakers, Will Yates, talked about the COBOL enablement available via the Open Mainframe Project.
Here it is: -
The COBOL Training Course is an open source initiative under the Open Mainframe Project that offers introductory-level educational COBOL materials with modern tooling.
Remembering that COBOL skills are still definitely relevant, despite the language's relative maturity - and yesterday's Meetup amplified that ( replays available shortly ), so get learning !