SP 2013 User Profile Service Overview Connecting your Profile to the Portal.
User Profile Synchronization Service: Tips and Troubleshooting by Paul Stork - SPTechCon
Introduction to the SharePoint 2013 User Profile Service
ServiceDesk Plus Product Overview
Click To Meet
Whether you like it or not! Importance increases significantly with SharePoint 2013 Pretty much every investment area relies on Profiles for core.
Norman SecureTide Powerful cloud solution to stop spam and threats before it reaches your network.