Hi changing the way you cook and the foods you eat, is a good start

if you eat a lot of processed packaged foods - start buying fresh - my OH and 2 young sons didn't notice any difference in taste .. They enjoyed having fresh home cooked meals better
Cooking with a spray oil or just wiping the pan with a paper towel with oil on it, cooking with extra lean meats
The biggest rule is that all items must be 5g total fat per 100g !!! So go through your cupboards and bin all things that you eat that are over 5g per 100g!
We all tend to count kcals too using myfitnesspal phone app or web site
Eating more salads and veggies (frozen or fresh) with extra low fat dressings or mayo - most sauces and dressings can be bought low fat and within the rules
I make spag Bol and stews using no extra oil just the juices in the lean meats, I use a low/ med heat to cook with as a high heat burns everything

lol
I and others love the 2 hairy dieter's cook books! Just use less oil and extra lean meats
The Hairy Dieters: How to Love Food and Lose Weight
http://amazon.co.uk/dp/0297869051
The Hairy Dieters Eat for Life: How to Love Food, Lose Weight and Keep it Off for Good! (Hairy Bikers)
http://amazon.co.uk/dp/0297870475