Michelle, losing body fat means that you need to burn as much fat as fuel as your body will allow. The best way to do that is to focus on burning calories. The reason that is: the greater number of calories you burn, the greater amount of fat you burn period. Don't buy into that myth about working at a lower intensity and you burn more fat. That's just not true. You burn a greater *percentage* of fat when you work at a lower intensity, but when you up the intensity, you burn more fat overall. A good comparison would be: 50% of a dollar is .50 cents. 20% of 5 dollars is $1. The percentage of the latter is less, but the outcome is more. Make sense? Actually your body is using the greatest *percentage* of fat as fuel during rest and that doesn't help you lose fat. So steer clear of that myth, it will derail your progress.
In terms of muscle endurance or muscle growth, the goals and methods here are different. Endurance is working on allowing your muscles to work against a resistance over a longer period of time (you do lots of reps, lighter weight). Muscle growth means that you condition your muscles to work against a very heavy resistance for a shorter amount of time (less reps, heavier weight, more rest between sets).
I would recommend a variety of weight training here. Some people respond better to endurance and some people respond better to strength. I think this depends on your body type and how it responds to weight training. You may want to focus on one for awhile and critically look at your results. If you don't see what you want, switch it out.
If you want to lose fat however, you must have a clean, clean diet and you must include cardio. Cardio is the best way to lose fat while weight training is the best way to get that 'toned' look. You'll want to include both.
Hope that helps!
Carolyn