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Your son can apply for the Discover it® Student Cash Back credit card. There is no annual fee. Every purchase on the card will get a 1% cash back reward. Also, you can Earn 5% cash back on everyday purchases at different places each quarter like Amazon.com, grocery stores, restaurants, and gas stations, up to the quarterly maximum when you activate. You have to register each quarter to get this bonus. Credit activity will be reported to the major credit bureaus, so your son will be able to build his credit history.

To qualify for the Discover student credit card, your son must be at least 18 years old, enrolled in a two- or four-year college. Other requirements include U.S. citizenship, a Social Security number (SSN) and a verifiable annual income sufficient enough to pay at least the minimum amount due each month. While the Discover student cards are fairly easy for students to get, approval is not guaranteed.