Patience, Bosox1984, patience.
We’re not all on here 24/7, so sometimes you may have to wait for a couple of days before receiving replies to questions asked.
Since you wish to begin exercising regularly, the mere act of doing so will help to provide your muscles with tone and shape, so the sooner you start, the sooner you can begin to reap the benefits of such an endeavour.
As for current body shape, based on the picture provided, it’s difficult to say for sure so I recommend that you perform some research of your own (
http://www.calculator.net/body-type-calculator.html).
That said, regardless of body shape, when you exercise regularly its composition improves dramatically. How dramatically it improves largely rests upon the kind of exercises performed, as well as the intensity of those exercises.
On the assumption that you wish to begin exercising in the gym, in the initial interim, I’d start off by using cardio machines such as the recumbent exercise bike (where the pedals are out in front of you), the elliptical machine and calf stepper. As cardiovascular fitness improves, progress to machines such as the spinning bike, treadmill and Stairmaster.
In terms of intensity, for the first month, aim to ensure that your rate of exertion is moderate/somewhat heavy, as you work to develop a sound cardio base from which to build. After the first month, you can begin to introduce interval training into cardiovascular exercise, which will allow the muscular, cardiovascular and respiratory systems to become more efficient at processing oxygen. When performing intervals, your rate of exertion should be heavy.
For example, upon the exercise bike, perform 2 minutes at level 7, followed by 60 seconds at level 4, repeating for ten minutes. The levels are pure representational, so adjust them to your fitness level.
As you work harder, the density and shape of the muscles in your legs improve, in addition to becoming more prominent (definition), since the layer of fat that once covered them begins to reduce. Clothes will no doubt feel looser, too.
Once your cardiovascular fitness has improved sufficiently (2-3 months), you can progress on to the treadmill, spinning bike and most importantly the StairMaster, which will work wonders for lifting and toning your derriere. However, since the StairMaster roughly replicates the same effort as running (without the stress upon the joints), a fairly decent level of fitness needs to be attained before attempting them.
Continue with interval training up to the four/five month mark, during which time you’ll have developed decent aerobic fitness, in addition to enjoying improved body composition, before progressing on to high intensity interval training, which will dramatically improve body composition, largely due to the huge energy deficit the activity creates.
Although exercise is important, dietary intake remains more so. To achieve successful weight loss, a daily calorie deficit must be introduced.
As such, consult BMR/TDEE calculators, since they’re largely accurate in determining energy requirements, based upon current measurements (age/weight/height) and level of activity.
Having obtained both, seek to introduce a daily calorie deficit of around 500Kcal from your TDEE, which should yield a loss of around a 1b a week on its own. When you include the calories expended through exercise and every day activity, the level of loss can increase to 2-4lbs per week (depending upon starting weight).
As your body begins to weigh less it’ll require fewer calories, so re-assess both regularly in order to avoid the dreaded plateau. With each stone lost, your BMR will reduce by around daily 100Kcal.
Lastly, provided you’re consuming sufficient daily calories to satisfy that of your BMR, you should continue to enjoy a satisfying level of loss over the coming weeks/months.
