Global Cache uses primarily online literature to provide guidance and support for their products.  The following are links to all of their support information:

Text WIFI set-up tutorial:          http://www.globalcache.com/support/wifitutorial/

Literature downloads:                http://www.globalcache.com/downloads/

User Forums:                            https://globalcache.zendesk.com/forums

Video guide to setting up iTach WIFI: https://go.bluevolt.com/bedrock/CourseDetail/Global-Cach%c3%a9-Setting-up-an-iTach-WiFi-Device/26216

Video guide to using iLearn utility:  https://go.bluevolt.com/bedrock/CourseDetail/Global-Cach%c3%a9-Using-the-iLearn-IR-Learner-Utility/26215