I need help with muscle gaining?

Okay so I have chicken legs which need to grow. I'm going to start going to the gym today but I need help. Should I go every day or every other day? (To GAIN muscle) Is it possible to see results in 2 weeks? Will a treadmill help me gain muscle or just make me thinner? Please tell me if my legs can be bigger within two weeks I need results as fast as possible?