My biggest tip for setting a food budget is to meal plan. Meal planning is such a big money saver. Personally, I have all my recipes in binders with a master list of all the recipes in the binders. I try to plan out well-balanced meals, even down to snacks, for the week. I try to shop with coupons and according to weekly sales. Planning ahead saves you from those impulse buys that will always get you in trouble! Once you have a good routine down for meal planning and shopping with your meal plan, then you can figure out a good range that you normally spend on groceries!