Hi, I hope the programme helps you. Once you have entered your age, target weight and target date you will be all set. 500 cals for breakfast is a lot, especially if you are then going on to have lunch, tea and supper.
I also used the You Are What You Eat guide to healthy eating. Typically I had a herbal tea as soon as I got up, followed by fruit, lunch was protein with a salad, dinner grains of some description mixed with ground up seeds,salad sandwich for supper, then a banana for a snack before bed. The good thing about eating unprocessed healthy foods you can eat a lot more of it. The other thing I did was to cut out potatoes and substitute sweet potatoes.
The other thing you can eat but only small amounts is nuts, nuts are filled with good fats that actually help you to lose weight (EFAs essential fatty acids). There is one nut that isn't good if you have high blood pressure though but I cannot remember which it is.
Oats are a super food for filling you up and providing lots of energy, throw it a helping of sultanas for an added boost. We just have oats made with water and done in the microwave only takes a few minutes. 50 g of oats is only about 195 cals but the main thing is they do fill you up.
Good luck.