I'm considering using steroids for the first time and could use some advice. I'm 5.9 feet tall and weigh around 120 lbs, especially my upper body, which makes me feel insecure. My aim is to reach a more normal weight. I have a fast metabolism and low testosterone levels, so gaining weight is really tough for me. I've never lifted weights or been to the gym before, or done any sports. My goal is to hit 140 lbs and then stop using steroids, trying to maintain that weight afterward. What type of steroids should I use, what dosage, and how often?