I started using my citi right away for gas intead of my previous card.  I used it for groceries and some other shopping.  I eventually signed up for the 529 with a min contribution of $250.  It was a one time contribution or you could set up a monthly contribution.

When my upromise account statement comes I love looking at the transactions posted to my account because there is always something going into my college fund.  It has now earned over $1000 since I first joined.  Please read info on it before joining because there are fees associated with the 529 and you may want to ask your tax advisor. ...