its usually said to not lift heavy for gains more than 2 days in a row, so a pretty typical schedule is mon tues lift, rest wed, lift thurs fri. Or just go mon, wed, fri. Definitely make sure you work your entire body or you'll end up like a ton of the guys do in gyms with huge arms and chests and toothpick legs with a huge belly.
It's up to you, but I run every day and it's good to be doing cardio so fit it in accordingly. A lot of kids also don't realize how important the food you eat is if you're trying to build muscle. The key is you're going to have to eat a ton. Not junk food though, a good balance of protein, carbs, fats, etc. It's complete opposite of a weight loss diet since you need a calorie overload whereas weight loss you need less calories than you use. It's still possible to lose fat and gain muscle at the same time though, it's just super complicated and I don't understand it.
