Additional Training:

Get to Know the New Jira Experience (Atlassian Documentation)

Getting Started with JSM for Admins (Atlassian Documentation)

Getting Started with JSM for Agents (Atlassian Documentation)

Training Video:

JSM - Comprehensive Demonstration of Everything JSM Cloud (YouTube)

Jira Service Management: The Employee Experience (YouTube)

Atlassian's JSM Playlist (YouTube)