>>2 Also, save up money for grocery shopping. To save money on gas, don't go once a week/once every other week. Buy in bulk once a month. Of course, you'll have to go out and get milk/eggs every week, but there's usually a place in walking distance for that.
When you go out shopping, don't bring any younger members of the family along. Only buy what's absolutely necessary. Obviously, no fast food or going out for dinner for a while.
When you're getting things for dinner, get large things, like a pot roast. You won't eat it in one night, and you can make something different every night using the left overs. You tend to save money buying large items that can be used for a while rather than getting small items for every night.
Also, don't be afraid to take a trip to the local dollar store for your smaller needs.