Yup. Simple math. Caloric intake. Eat less than you burn.
Learn the food pyramid. Eat balanced portions.
Something like this per day: 4 grains, 2 meats, 3 dairy, 2 fruits, 4 vege, unlimited water.
Always do cardio/calves and abs as your warm up each day. (They always get avoided so make them mandatory each work out.)
No matter what lifts you choose for your cycle (4 or 6 weeks, etc) before you change it up, you must pair complementary muscle lifts)
FOR EXAMPLE:
Day 1: Chest/Tri's
Day 2: Back and Bi's
Day 3: Shoulders Back
Day 4: Legs and Core (lats, hips, squats, clean and jerk etc)
I agree with some of this and disagree with some as well.
I don't think you should do the calves/abs each day. Just get in the habit of doing them. Once a week is plenty if they are done right. In order for a muscle to get stronger it needs time to heal. If you don't give it a chance you won't get stronger.
Take notice that when you do certain exercises other muscles will get worked out as well. Know that when you workout so you don't workout one muscle too much. When you lift you are actually tearing/stretching a muscle, when it heals or grows back it is a little bigger. This is a repeated process. If you don't let it fully heal, it doesn't work. Muscles use protein to heal which is why I like to follow up all workout with a protein shake within 30 minutes, along with lots of water.
I also like to change the exorcise I am doing every 5 weeks. Your muscles will start to memorize the exorcise (muscle memory) and it will not be as effective.