Welcome to the forum. You'll find that will help you with whatever you need.
The best advice I can give you is to research a ton about how to train correctly, with good form and good exercises. Stick to the basics of compound exercises, and go from there. Also, evaluate your diet, you probably aren't eating enough to gain weight as most people don't.
Research about dieting on the forum and training as well, and post any questions you might have.
__________________ Strength is understanding that your power is both physical and emotional. - Henry Rollins |