The top places to get free coupons is going to be online because they are printables. So you can go and print them for free:
Next place I would say is the Sunday Newspaper for their Redplum Coupon Insert, Smartsource Coupon Insert and even Proctor & Gamble Coupons, but if you get the paper it's going to cost you $1.50 at least. So look around and see what works best for you!
*If you enjoy couponing and saving money, you can check out TheCouponClippingMom.blogspot.com for weekly store coupon matchups, sunday coupon preview, Facebook freebies and much more.