|Coupons in the middle are from my printer.|
Three of my favorite coupon sites are Coupons.com, SmartSource, and RedPlum. You can print out tons of online printable coupons absolutely free at these sites.
When you get started, the site will ask you to install a Coupon Printer app in order to print the coupons. (It's an industry-standard browser plug-in. I haven't had any problems with it.)
The coupons you choose will print out with barcodes. The barcodes on the coupon will be scanned at the register by the grocery cashier, giving you the discount.
To learn more about printable coupons visit Sarah Roe's site- moneysavingqueen.com. Sarah is the "guru" of couponing and her site is packed full of great info.