Lifting

I have been doing free weights for about a month now, and have definitely noticed a difference...not so much in my body (it's still quite covered in fat, so it's hard to tell...) but in the amount I can lift. I have increased the weight of every lift, especially bench press. I might even move down to the scary, male-dominated weight room soon. BUT - what I'm wondering is how I should arrange my week.

Most days, I follow one of the posters on the wall at my gym and then do some cardio. There are three of these posters, the first is shoulders, the second is legs and abs, and the third is arms and back. Each poster has 9 lifts on it. Am I leaving anything out? Should I keep doing one body area, then cardio? Or should I focus 2 or 3 days per week on full body?

Thanks!