Hi! I answered a similar Q last month. (I know less about you than the previous asker.) Body, age & metabolism dictate healthy weight gain. Trying to be a drastically different body type= unrealistic= unhealthy, especially if you're still developing. 6-8 meals. G BOMBS = Greens Berries Onions Mushrooms Beans, Seeds (nuts). White meat, fish, protein powder, whole grains. Protein=1 gram : # of your weight. (non-athletes 1/2g : #). Chief component of protein = 22 amino acids. Food is utilized only in proportion to the scarcest of those amino acids. 8 essentials, 4 of which are more scarcely found in food. Good whey protein contains natural essential amino acids - "L Branch chain" amino acids. The L signifies the protein helix rotates to the left/lextro. Avoid dextro amino acids that rotate to the right- they're manufactured. Eat different foods during the day to coincide w/ our circadian rhythm. Protein before & after workouts. Carbs=a variety of whole grains. quinoa? Cottage cheese before bed to get creatine. Number of calories you'll need depends upon you exercise regimen and goals. Hope that helps. Glad you are looking for a healthy "bulk up."