<prompt> Human: Im 20, and about to finish school and my total student loans are around 120k. I got approved for the rewards card with 3 on gas, 2 on groceries, and 1 on anything else.Is the 3 good at any gas station? What about grocery stores? I only plan on using it to buy gas, then immediately pay it off to start building credit. Is there anything you wished you knew when you first started?  <response>: Dont use BofA. 