Hi and welcome to Extreme Fitness, It's great that you want to do something to get in shape, having the motivation is the #1 thing that will bring you to where you want to be.
So you want to tone up your body. First, I have to tell you that the belief that one can "tone up" his muscles is a myth, an over used expression that doesn't mean much. Your muscles won't get any harder with weight training, except during a workout and right after, because of the increased blood flow and the contraction in your muscles. However, what I understand you want is your body to look harder, and that is definitely possible and is achieved by losing the layer of fat that is covering it. Keep in mind you can't spot reduce, which means you'll have to lose fat all over your body.
Here are the key elements required to achieve a harder looking body :
1) motivation
2) diet
3) cardio
4) weight training
5) rest
Usually when you have the motivation, the rest follows automatically once you know what to do, which is what I just told you
The diet is very important because you're made of what you eat, and that's a very good reason to avoid eating crap, I think. You should create a calorie deficit by consuming less than your body needs daily. The calories should be split over more than 3 smaller meals of quality food.
Cardio (any kind) is great because it burns more calories than traditional weight training and will help you in achieving a calorie deficit and allow you to eat a bit more. It's also excellent for your heart and your overall health. You could alternate between short and intense sessions (for example 20 mins of interval training where you alternate between sprinting and slower pace) and longer steady rhythm cardio sessions (30-60 minutes).
Weight training is also excellent for your overall health when done well. It will increase your strength, your muscle mass (which will give you more definition and curves for a given body fat percentage). I warn you though, many women literally waste their time doing series of 50 reps which feather weights and stopping their series before it even starts getting hard because they're afraid of putting on too much muscle mass and looking like a man. What they don't realise is that women have 20-30 times less testosterone than men, and have less muscle tissue available for hypertrophy to begin with, and even a man has to work really hard to put on a lot of muscle mass, so there's nothing to be afraid of. If you want any kind of results you should stay under 20 reps per set.
Also, the additional muscle mass will increase your basal metabolic rate, which means your body will consume more calories even when you do nothing, which should help a bit with the fat loss.
Lastly, having adequate rest is also important as this is the moment when you recover from your exercise, repair your muscle tissues and build new ones, so don't undersleep !
I don't know what this "power 90 X program" consist of, but I would suggest you do 3 full body workouts per week with one day of rest between each of them, and at least 3 cardio sessions (in-between the weight training days or on the same day, after the workout)
You don't need any supplement for now (or ever), you just need to eat well and start getting used to this new active and healthy lifestyle.
If you want specific weight training routines, you will find plenty using the search function or in the stickies at the top of the bodybuilding and strength training section. For informations regarding diet, you'll find more than you want to know in the nutrition and weight loss forum.
This should get you started, don't hesitate to ask precision on anything you want to know about. And don't forget to enjoy this new lifestyle !!!
Question about working out
