Advice for the Recent Grad: Low Salary Genre

Ahhhhh. The recent grad. Time for advice: get a no-fee credit card, contribute to your 401k, get a Roth IRA, blahblahblah. But what about the recent grad of the low salary type? the Vista volunteer who will be making $1000/month at a worthy endeavor? (In the meanwhile studying for MCATS) I already gave the grad two books. And I say it's also time to learn basic frugal skills, which are a necessity when you have little and allow you to get more out of your money even if you are a well-paid physician. The grad asked me to help him save money on basic household expenses. To start, I say: buy a big bag of dried beans. Then buy a big bag of rice. Both are investments that will pay off. What would you advise?