I just started back this week too. I split my week up like this: Back/Bi's/calfs on Mon and Wed; Chest/Tri's/upper legs on Tues and Thurs, and abs + whatever I feel like hitting a little more on Fri. I go 1 warm-up set for everything, then about 80-85% max for 7-8 reps, adding about 5 lbs each set. For example, on decline, I'd start the first heavy set with 295, then 305, then 315 for the last set. Use a Smith Machine if you don't have a spotter with you. I use one for my bench,decline,squat, and shoulder press. I'm starting a bulking cycle, so I eat everything that isn't moving. Eat at least 1 gram of protein per lb. of bodyweight to build muscle, or 1.5 grams/lb if you can. Protein shakes are a good way to get extra protein in during the day. Drink one first thing in the morning. Your muscles have been repairing themselves all night, and the need the extra protein in the morning as soon as you can get it to them. Eat lots of carbs in the morning too. Creatine has helped me personally. Just lift heavy for 7-8 reps/set, work the muscles to failure-when you can't lift the weight anymore, and eat lots of protein.