check out the weight loss society in the fitness section. also check the stickied posts before you start.
reduce the amount of fatty, sugary, processed, and white-grain foods (i.e. if something uses "wheat flour" instead of "wholewheat flour" avoid it, same goes for avoiding "white rice" and chooseing "brown rice"; avoid anything with "glucose-furctose syrup/corn syrup/glucose/sugar; avoid butter, oil; things with a lot of chemicals.
instead choose wholegrains & bran (brown rice, wild/red rice, quinoa, buckwheat, rye, oats, any bran), lean meats (turkey/chicken), fish (tuna/cod/haddock= low fat, salmon/mackerel/sardines = fatty but good), eggs/low fat dairy, soya products/quorn, pulses (lentils/beans), VEGETABLES AND FRUIT, healthy sources of fats (avocado/nuts/fish - remember to watch portion sizes here)
it migh tbe hard to stick to the following but this is just an example menu for a day:
b: -porridge (made with a little skimmed milk, sweetener) with banana or other fruit OR a wholemeal english muffin/2x toast + 100% fruit jam, a piece of fruit OR cereal (wholgrain like wheatabix or shredded wheat or bran, look for low sugar), skimmed milk & fruit OR egg on toast with mushrooms
-tea/coffee/herbal tea
s: low fat plain yogurt with fruit and sweetener OR 1-2 pc fruit (not banana) OR 3 x veg OR low fat hummous with veggie sticks OR ryvita/rice cakes with lf cottage cheese
l: soup (not cream or potato based), wholegrain bread OR salad with protein source in it OR sandwich with salad and fish/low fat cheese/meat/bean paste OR a salad with a grain/pulse OR a jacket potato with tuna/beans
s: as earlier
d: as above OR brown pasta/rice with veggie based sauce & meat/fish/pulse/quorn (e.g. pasta with homemade spicey tomato sauce, courgettes, mushrooms, and quorn sauceages) OR omlette with veggies & cottage cheese... or salmon with asparagus, brocolli and quinoa, or lentil stew...
allow yourself a snack before bed if you're hungry - this could be something like fruit & yogurt as that's dessert like, or you could allow yourself a treat like a 'be good to yourself' pudding (bread & butter pid/ chocolate puds are great)
sugar free jelly is also a fantastic way to have dessert for very few calories.
drink hot fluids to fill your belly and dont forget to drink enough water - often "hunger" is actually thirst
if you find out how many calories you need to maintain your weight, subtract 500 from this and eat that number of calories per day. at this stage perhaps you should build up to doing exercise by making sure you do something evryday, even if it's just walking. even better if you can do cycling, swimming, running, sport, aerobics etc - but if you want to add this later on then at least do the walking for now.
don't try to limit your fruit & veg intake, as these are so low calorie tha you should learn to enjoy them as much as possible. they will satisfy cravings by providing you with a wide range of vitamins and flavours, and are great for snacks.