If you were thinking about buying a paper for coupons today, go do it! Today's paper contains up to 5 coupon inserts depending on your area.
My suggestion is to purchase the newspaper that serves the largest metropolitan area in your area. This newspaper will typically have more inserts than that of a smaller area.
Can't bring yourself to purchase a paper? That's ok! Money Saving Mom has some great tips on how to score free coupon inserts here.