for a MOS 19K job description go to: http://usmilitary.about.com/od/enlistedjobs/a/19k.htm
this will give you a pretty good idea what is expected. Although with the current war time situation you will be required to perform dismounted operations from timt to time. Tankers generally consider this to be degrading, but its a its nessesary due to the size of the current force. The moto "death before dismount" harkens back to a day when we had 13 combat divisions. Units like the 3rd ACR stay mounted as much as possible and have really given the enemy fits on the syrian border.
AIT.. I9K basic and AIT are done in the OSUT (one station unit training) format. what that means to you is.. you will basically fall in on the AIT portion of that training. That should be the last 6-8 weeks of the course. You will proably be billited in the permenant party area apart from the trainees and given a training schdule outlining class times and locations. most will be at Holder Complex and COFT site, both are with in walking distance. The training schdule will tell you where to meet transportation to more remote training locations.
hope that helps...good luck