My most-favorite - go-to-it-almost daily coupon website...
How I organize my coupons
What is coupon fraud?
All about CVS weekly deals
All about Publix deals; weekly sales, specials, coupon books etc.
Links to store coupon policies: (print these & keep in a folder with your coupons, or in your binder, in case you need the policy while shopping.)
Kroger (digital coupon policy)