Stack it up. There are two varieties of coupons: store coupons, published by your local supermarket, and manufacturer's coupons, which can be redeemed at any store. You can "stack" a store coupon and a manufacturer's coupon together to maximize savings. Some stores will even let you combine two store coupons of different dollar values. Check your favorite supermarket's website to learn about its coupon policies.
Bring only the coupons you need. If you bring an entire newspaper insert full of coupons to the store, chances are you'll use coupons to buy things you don't really need. Make a grocery list each week, and bring coupons for the items on your list, or for must-have items you know will be on sale. Plus, you'll save hours clipping coupons you don't really need. A coupon organizer, like The Couponizer, allows you to keep all the coupons you need in order from week to week.
Dig your newspaper out of recycling. Printable coupons from sites like Coupons.com and SmartSource.com are on the rise, but 85 percent of store and manufacturer's coupons still come from newspaper inserts. High-value coupons -- those that save you a dollar or more per item -- are usually found in big-city newspapers with higher circulations. "Save the entire insert, so you can go back and cut what you need each week," Nelson suggests.