I need more protein in my diet?!

I need more protein in my diet?

I am a little underweight and I'm trying to gain some weight back after losing a lot, but I want to gain mostly muscle. What are some foods high in protein because I feel like I am lacking it. My family is kind of poor so we don't get to buy a lot of meat. What are some other foods I can eat that will make me healthier? (I'm 15).

Beans (pinto, kidney, etc.), peanut butter, cheese and milk are all good sources of protien. Peanut butter is high in fat, but it's a good fat that our bodies need. Beans are also high in fiber and that's very good for you, too.