to maximise muscle growth, you will need to consume more calories than you need (300-500 surplus calories) you need a lot of protein, whether it’s through food or supplements. dieting is important, you want to avoid foods that contain too much fat. though fat is important for muscle gain, too much will hurt more than help. your most important nutrients for muscle gain are carbs and protein. you should look into what type of food you need to consume, and whether it’s before or after the work out. other factors, such as adequate sleep/rest, adequate water intake and correct workouts will aid in muscle gain. hope this helps.