Discover Credit card. Apply here : https://refer.discover.com/s/i33ja -No Annual Fee -Earn $ 50 bonus if a purchase is made within 3 months. -5 % cash back rewards on a special purchase category each quarter. Oct-Dec 2018: Amazon.com, Jan-Mar : Grocery stores, April-June: Gas, Uber, Lyft, July-Sep: Restaurants 1% for rest of purchases. -The total rewards earned by end of first year will be credited again to the account, which means double the amount of rewards for first year. Thus 10 % for the special categories ! -$ 20 bonus every year if CGPA at college > 3.0