How would i gain weight to look normal?

First you may want to consult your doctor.Sometimes we are too thin because of a medical issue. Muscleand nofit isnt a bad thing. Check the dietary guidlines through the American Medical ociation.Through them you should be able to learn how many calories you need per day based on your size and activity level, to maintain your weight.When I am ina very active mode,I increase my calorie intake to2400 per day. Don't increase w/ junk food. I use yogurt, peanut er, breads etc. Please ask your Doctor for advise.That is part of their purpose. Good luck.