Clearvision's Atlassian specialists have written the Ultimate Ninja Guide to Atlassian tools, which covers Jira, Jira Service Management, Jira Work Management, and Confluence.
The guide provides information on the basics of using Jira, Jira Service Management for IT and other business departments, Jira Work Management for configuring workflows and managing work, and Confluence for creating, storing, managing, and sharing knowledge across the organization.