Oh! I'm so glad I saw this thread!
I have been a couponer for about two years now. I have saved hundreds and hundreds of dollars over these past two years. I cannot remember the last time I ever had to pay for toothpaste, razors, or shampoo! (And no, I'm not crazy!) I only coupon for myself and my live-in boyfriend.
As someone previously mentioned, "The Grocery Game" - there are websites that cater towards local grocery stores/chain. In my opinion, The Grocery Game is a ripoff - they make you pay a subscription fee. CouponMom.com does the exact same thing, but for free. You do have to become a member (which is just a simple email sign-up).
There are a TON of other sites that are super helpful. My all-time favorite (and the site I credit 99.9% of my couponing knowledge to is:
Hip2Save.com. Collin over at Hip2Save is a godsend. She is incredible. Make sure you check her out... Click on "Coupon Newbie" at the top menu and you'll be set! Also, check out her video series for couponing tips and tricks.
A few of my other favorites:
CouponingtoDisney.com
TotallyTarget.com
WildforWags.com (Wags = Walgreens which is actually a really, really fantastic coupon store)
Couponing has saved me, financially. I am a college student and just cannot afford to pay full price for things. I'm not a crazy stockpiler, but I do have a small closet in my apartment full of pasta, body wash, deoderant, home products, toilet paper, paper towels, etc. that I paid next to nothing for. It's really not hard - if I can do it, anyone can.
I know I'm like super gung-ho about couponing - but it has seriously saved my financial-life.
Also, all of the websites I listed are completely free. Don't ever pay for a couponing website.
If you're a fan of forums... HotCouponWorld.com and AFullCup.com are couponing forums that cater to the big name stores (K-Mart, Target, Walmart, etc.) as well as your local grocery stores.
Seriously, though, Hip2Save.com. Go check it out. Read all about being a coupon newbie and you will see how much money you can save!
P.s. Most coupons come from inserts found within the Sunday newspaper. But a lot can also be found on Coupons.com, SmartSource.com, and RedPlum.com (all of these are free). One thing to note, you must download software to print coupons - this is to avoid fraud (i.e. people printing 100 coupons) the standard limit for coupons is 2 per computer. But I promise you, they're all totally safe.
Yay couponing!