Kiwi Farms

I'm just starting to hit the gym regularly (3 times a week, for at least an hour) and wonder if I can get any suggestions or advice.
I'm not overweight by any stretch, but have a bit of a tummy and want to generally get more toned. Anyone know of anything (weight routines, treadmill setting, ect) that can help? I'm also looking into supplements like amino acids and proteins.
Also important, I'm female.

If anyone else is a beginner and wants to join in here feel free.