I have the Citi Professional credit card (it’s one of the cards I use in my 0% balance transfer arbitrage ) and they’ve been offering 10,000 ThankYou Points to new applicants after their first purchase on the card. The 10,000 points is good for a $100 gift card to a whole bunch of places or $100 in straight cash that can be applied towards your student loans (if you have any). A popular choice for the $100 gift cards has been gas stations since everyone needs gas.
As for the regular benefits of the card, you get 1% cash back from all your purchases and 3% from restaurants, gas stations, auto rentals, and some office supply stores. There is also a 9 month 0% balance transfer offer (which I took advantage of). There also is no annual fee (never pay an annual fee!).