Get to Know the New Jira Experience (Atlassian Documentation)
Getting Started with JSM for Agents (Atlassian Documentation)
Comprehensive Demonstration of Everything JSM Cloud (YouTube - 2 hours with sections listed)
What is JSM
Customer Portal
Request Intake
JSM Issue View
Queues & Request Triage
Reporting & SLAs
Asset & Configuration Management
Incident & Change Management
Automation & Project Administration
Jira Service Management: The Customer Experience Using the Portal (YouTube - 6 minutes)
Atlassian's JSM Playlist (YouTube - 50 videos on various JSM topics)