You are 16, go get strong and make your parents buy you extra meat/rice/potatos/eggs etc
Look up Stronglifts 5x5
Do that 3-4 times a week and some isolation work after for arms or shoulders etc.
Track your food intake
Be consistent with your diet if it helps - eat the same thing every day it makes it easier to gauge what does what
Get 8hrs sleep a night
You'll be flying along in no time.