I want to build some muscle and dont know anything about nutrition and body building.

1. read tips on gaining muscle mass, workouts and dietary needs on this site
2. Actually you need more carbs than protein to help sustain your workouts. Protein helps to rebuild and repair the micro tears in the muscles from the weight training. Carbs are used as the major source of energy for your workouts. Protein needs can be meet with one gram per pound of body weight. So, your calorie % should look something like this, 50% carbs, 30% protein and 20% fats. May change that up a few percentage points in each cater gory, but stick close to those numbers. And be sure to chose healthy foods for all macro nutrients. I would avoid the circuit training, that's mainly for a higher heart rate workout. Stick with lifts that are multi-joint (involves more than one joint when doing a lift, I.e., squat) or another to look at it, lifts that use the most muscle mass. Be sure to work your entire body equally, especially your front and back. Good luck!!

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