Workout for summer time???????

Hey I'm playing football next year and I want to get ripped for next year in school. But I have a low amount of budget for high protein things and such. I have dumb bells and I use the free outdoors for running and the park for pull ups and other stuff. I was just wondering what are some cheap yet nutritious foods I could buy. PS we don't have really good equipment for making food at my house and I barely know how to make some good nutritious food. Any suggestions????????