look up interval training, good way to burn fat without losing muscle, try to keep carbs to a min (for weight loss) , id try to fit in weights as well, as building muscle increases metabolism which in turn burns fat, what i do is something like this:

Monday: Chest x 5 exercises and triceps x 3 exercises, 20 min interval training
Tuesday: Cardio
Wednesday: back x 5 exercises and abs x 3 exercises
Thursday: Shoulders x 3-4 exercises and bicep x 3-4 exercises, 20 min interval
Friday off
Sat: abs and cardio
Sunday: off