When you go shopping, make sure you calculate the price with the coupon compared to the cheaper brands. Most of the store brands or cheaper brands are about the same quality. In fact, some of the store brands are made by the more expensive brands. I know bread in most of the stores in my area are made by the more expensive brand. So, why are you paying more?
Taste test some of them, if you need to prove it to your family (or yourself). I did a blind taste test one time with cereal. My children picked the cheaper brand each time. So, I only buy the cheaper cereal now unless I can find the other brands for less. It may cost a little more to taste test products but it will end up cheaper in the long run, hopefully. Just taste test a couple at a time. Be honest. If you don't feel that you can be, have someone do a blind taste test on you.
Here are some of the links for coupons and how to coupon. As you can see there are several sites (and I am probably forgetting some at this point). Check them out. I even added a few pictures. :o) Happy couponing.
All You
American Family
Betty Crocker
Cellfire
Cool Savings
Coupon Mom
Coupon Network
Coupons.com

Dollar General Coupons
Grocery Coupon Network
Red Plum

Saving Star
Smartsource
Target Coupons
Upromise
Walgreens Coupons