Suggest Healthy Diet To Increase The Body Mass

Hi Doctor, I'm an 18 year old male that is a little too underweight for his age. 6'2 and 129 pounds, it's not pretty. I eat junk food, but for the most part I like to stay healthy. I drink water a lot and look for healthy food choice opportunities. I would like to start gaining healthy weight, as in not eating a bunch of crap that's going to clog my veins and give me a heart attack. I desire some good meal plans with a healthy, but fatty choice of foods. Can you help me?