I haven't seen Atlassian training for these tools pop up yet, but the Training and Certifications community is probably a good place to watch, as well as what you'll find in YouTube (e.g., searching training for jira project discovery, several came up) and Jira 3rd-party vendor sites. Your next best bets are to Follow the Professional Certifications page and regularly check the free courses on the Learning Paths page.
Good luck!
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