There are SO many coupon bloggers and websites with useful information, this is just a handful of the ones I've come across.  Google couponing + matchups + YOUR STATE/CITY/REGION to find blogs and websites in your area.

Search for blogs in your State:
Besentsable's Grocery Gathering
The Frugal Map by Bargain Briana

TUTORIAL AND COUPONING GUIDES - Lots of websites & blogs have tib-bits of "HOW TO" information.
    Bargain Brianna 15 Days of Couponing  
    Saving Money Plans Online Coupon Course
KrazyCouponLady 10 Days to Couponing 

COUPONING BLOGGERS - Lots of bloggers offer couponing tutorials too!
5 Dollar Dinners - Matches up stores weekly ads with coupons, to make $5 dinners each week.  Neat idea!
AZ Grocery Guru - Arizona area free Coupon Sense mentor
Centsible Sawyer - CVS, Walgreens, Target, Walmart, Aldi's, Kroger, Albertsons, Bi-Lo, Miejer, Food Lion, Publix, Safeway, Giant Eagle
Cherry Picker -  NE Ohio
CincySavers - Cincinnati area money saving website
Hip2Save - Rite Aid, CVS, Walgreens, Target, Walmart, lots of freebies and user found deals!
Just Trying to Save Money - Cincinnati Area blog Krogerm Meijer, CVS, Walgreens
Maven of Savin'- Boston Area, Match ups for Shaw's, Publics, Stop n' Shop, Roche Bro, Albertsons
Mommy Snacks - Cincinnati area
Money Saving Habits - Cincinnati Area, Meijer & Kroger matchups
Money Saving Mommy
Savings Makes Cents - Cincinnati Area, Jungle Jims
STL Mommy - St. Louis, MO Area
Saving in Akron - Akron, Ohio
Stretching a Buck - Cincinnati, Ohio
StockpilingMoms - Kroger, Meijer, Family Dollar, Publix, Vons, Starter Bro, Walmart, Target, CVS, Walgreens, Rite Aid
The Grocery Girls - Western States, affiliated with
Thrifty Tiff - Target, Walmart, Kroger, Publix, CVS, Walgreens
A Full Cup - Website lots of couponing info, forum area by Grocery Store, TONS of stores!
CincySavers - Website for the Cincinnati Area
For the Mommas -Acme, Food Lion, Kroger, Giant Eagle, Giant PA, Miejer, Pathmark, Publix, Redners Market, Safeway, Shop Rite, Superfresh, Weis Market, CVS, Rite Aid, Publix
Grocery Coupon Guide - Coupon rules and guides
Grocio - Grocio puts you right on the grocery circulars and coupons you want without a bunch of clicking around or flipping through newsprint. You won’t see that out of our competitors!
i heart wags - Walgreens
Nicoles Nickels- Photo deals, surveys, mystery shopping, freebies, coupon match ups for CVS, Walgreens, Walmart, Target, Rite Aid, Publix, Winn Dixie and Harveys
Savvy Dollar -(North Carolina)
Southern Savers - Bi-Lo, Kroger, Harris Teeter, Publix, Bloom, Food Lion, H-E-B, Harveys, Ingles, Piggly-Wiggly, Winn Dixie, Target, CVS, Walgreen, Rite Aid
Take the guess work out of couponing, and determining when a items is at it's rock bottom price.  These websites track the sales cylces for you and let you know when it's a good time to stock up on items.  These are database type websites.  They may or may not do printable coupon matchups!  Being Frugal goes into more detail on how these sites work.

    Grocery Game - Try for FREE for four weeks, my only concern when you begin is you won't have a good stock on coupons to even get most of the deals.  So maybe try it out after 2 months.  Basically you pay a nominal monthly fee, for access to a database to get your grocery store deal matchups.  It rates the deals, so you know when there are stock up prices.  You Tube video on using the grocery game
    My Grocery Deals - offers a free service which lists what is on sale at your store, but does not match coupons to the sale items unless you pay $2.95.  
    Coupon Sense - You Tube Video on filing system Coupon Sense Uses Deals to Meals - Small monthly fee, serves the Western States

    Grocery Guide - another free alternative to the paying websites, they star items to let you know if it's a okay, good or great sale price. 
    CouponMom - offers a similar service like the above websites BUT for free.  But it doesn't offer Meijer match ups :(  
    Grocery Smarts - Nevada, Utah, California, Idaho, Washington & Arizona (Passports: NV is g89cjm, UT g84ctm, Southern CA g92r01, ID g83ro1, Eastern WA g99ro1, and AZ g85ro1)