I just started going to the gym (today! lol) but I really am not sure what is effective. Today I did the treadmill at 2.0 mph for 30 minutes. I lifted 12 pound free weights. How long should I lift? Is 12 pounds enough? I jump roped. I used an ab machine (you sit on it and a padded bar is across your chest and you lean forward) with 20 pounds and I used a rowing machine.I don't even know the names of the machines! LOL. I worked out for an hour total.
Any suggestions on where I should start?

