Lose weight and lose fat are two different things. Obviously losing fat is the key thing with most people, we advise not to be too concerned about how much you weigh, but instead what you look and feel like.
We say this because one of the best ways to drop weight is by incorporating some form of weight training into your routine alongside your cardio. The more lean muscle you have, the more calories you'll burn on a daily basis. Your weight might not necessarily change as much because you could lose fat weight but put on muscle weight. Obviously everyone is different, but you will look leaner.
If you are training without the use of equipment, even bodyweight exercises will help you to build some lean muscle (although not as much as weight training). So stick with full body circuits with or without free-weights, 3-4 times a week and you can't go wrong.
Diet wise keep it very simple...to lose weight you have to burn off more calories than you eat each day. If you still aren't losing any fat after about 2-3 weeks, try dropping 200-400 calories out of your daily intake, then see what happens another 2 weeks later.