Did the lady that came on Oprah that got her groceries really cheap by using coupons only use sunday paper &..?

internet coupons? Or did she find coupons somewhere else. There were some items that even came out free when her coupons were applied. I want / need to be able to do that too since I'm the only one working right now. I've been buying the Sunday paper and clipping coupons and searching for all sorts of printable food coupons online since I saw the show but I never find the savings worth it even after coupons are applied. Mostly because the coupons are for brand names and the final bill would come out cheaper by just buying store brand versions instead of using the brand name food with the coupons. Anyone know how she was able to save so much and was able to even have some items come out to be free after the coupon was applied?