One of my best resources to find great deals is in online forums. I have two favorites, A Full Cup & Hot Coupon World. These sites take a little while to get used to. As with anything, they have their own language and rules but you can usually find a sneak peek of the upcoming ads at most stores (including grocery stores), printable coupons, and deal discussions. You'll have to sign up for each of these to become a member but (of course) it's free.