Jira Admin Jumpstart Kit
The two modules included in this JumpStart kit are taken from Atlassian University’s Jira Administration courses. If you’re a new Jira Admin, they should get you pointed in the right direction or if you have some experience, they may be a great refresher.
Setting Up Users & Groups gives you a solid understanding of how to add new users and control their access to Jira applications through groups.
Creating & Configuring Projects gives you the background you'll need to create the right types of projects for your teams. You’ll also get an introduction to issue types and workflow, which are both essential to any project.