Basically, I cook everything in olive oil now.
I skip butter and margarine and dip my bread in the olive oil with a little pepper on top.
I try to eat zucchini and eggplant often- I put it on the BBQ grill after putting a little olive oil on each side.
I eat a ton of salads- filled with spinach, tomatoes, romaine, and then I put some flax seed (it's pretty good actually) or sunflower seeds on top- drizzle with oil and vinegar (I use apple cider vinegar because it's supposed to promote weight loss). Skip the croutons and put on some feta cheese, I sometimes put craisins on top of all that. It's a meal in itself.
For dessert stay away from processed sweets. Have some fresh fruit with yogurt (I've recently started finding greek yogurt in the groc. store, which is lovely with fruit).
You want to eat "healthy" fats- that means lots of nuts, peanut butter is okay (just watch the calories with that stuff).
Eat less red meat- but fish is fine.
For snacks try nuts, feta cheese with olives, etc.
You really want to avoid processed breads- but if you're like me and need them, then you're going to want whole grain- (that goes for everything- pasta, bread, rice, etc).
Lots of fresh veggies at every meal is the key. You can have an egg for breakfast- but avoid sausauge and white toast. Try to instead have yogurt and fruit/ nuts for breakfast, with a slice of whole grain toast- with peanut butter.