I agree with what rich and dub said. Work out Chest one day, arms one day, and shoulders/back/traps one day.

I found that staying on a seven day plan is the easiest, because it helps you get a momentum for each day of the week, I guess. It's hard to explain.

Before I stopped working out due to medication that I have to take, I did chest day 1 and 4, shoulders/back days 2 and 5, arms on days 3 and 6, and rested on day seven. I did a lil cardio (ab-doer) as a warmup before weightlifting, and did ab exercises everyday after weightlifting.