Wanna gain weight? Eat. That simple. Eat more than what you are eating. Eat more than what you think you can eat. Skip breakfast? You can well skipped as much as 500kcal easily from that breakfast. Your whole day of eating can be only be my breakfast.

Fix your eating habit before thinking of going to gym to train. This is because training takes up calories and calories is what you do not have enough.

No, your penis will not be small. The usage of steroids renders the natural testosterone secretion from the testicles zero. So when your testicles are no longer in use, it shrinks, just like your muscles.