I'm Moving out this week, and only make minimum wage, How can I save money while living on my own?

The only reason I think I'll be able to afford rent/utilities is because I bike everywhere instead of driving so I don't have a gas budget. My main concern is groceries. What do I buy so I can eat a lot (I bike ~40 miles daily if possible, so I got through a lot of food) still have balanced nutrition and not spend a fortune? Any other tips on frugality would be greatly appreciated. PS: If you're going to recommend working more hours I cannot do that, I am working every available shift and also taking classes.