Try doing an internet search for "calorie counting" and you will be able to put in your height, current weight, etc and find out how many calories you need daily to "maintain" your current weight.
One pound = 3500 calories, so, in order to lose one pound, you need to create a deficit of 3500 calories. Loss of approx a pound/week is reasonable, so figuring that you need to eat 3500 calories less each week, that would be averaged out to 500 calories less/day.
Try keeping a food journal, and make sure you record EVERY bite that goes into your mouth and count the calories - I understand the medhelp is coming out with a food journal soon. Then cut down from there.
Speedy2056 is right about drinking water, cutting out sugary drinks, juices, etc is an excellent place to start. And try to go from white to wheat for bread, white to brown for rice, etc. And exercise is crucial to healthy weight loss.
Mostly though make sure you get plenty of fresh/frozen fruits and veggies. The closer to "raw" your food is, the better - that's why frozen is better than canned. Also make sure you get enough of the "healthy" fats.
Read through past posts and you will get tons of ideas. You can get plenty of support and motivation right here. Hope to see you regularly.
Good luck
Start by drinking water and incorporating that into your lifestyle. Limit sugary foods and drinks as sugar gets converted into fat quickly.
Change the type of carbohydrates you eat ie substitute white bread for brown bread, white rice for brown rice, green veg etc.
The benchmark for a calorie deficit is 1,500 so you could try around that amount of calories.
Take up exercising to tone up those areas when you do lose fat from them or you will have lots of loose skin by the end of it.
Exercising speeds up the results with a combination of your diet.