The 2011 guide taught you to export issues to PDF via the "Issue Navigator." That output was ugly, paginated poorly, and un-collaborative.
Security was a paramount concern. In 2011, JIRA was moving out from behind the firewall and into the cloud (Atlassian Cloud was in its infancy, then known as "JIRA Studio" or "OnDemand"). -PDF- -2011- Practical JIRA Administration
The 2011 PDF taught you SOAP. Ignore it. Learn the Jira REST API v3. The 2011 guide taught you to export issues
Chapters cover the entire user lifecycle, from adding and modifying users to deactivating them safely. -PDF- -2011- Practical JIRA Administration