Printable Online Grocery Coupons

Groceries in Hawaii are very expensive and I am finding it difficult to feed my family. I only work part time for minimum wage and my husband is a underpaid school teacher. So we make too much to qualify for public assistance, but not enough to pay bills. There is nothing we can cut back on, so my only solution is to find more online coupons. I saw something on TV where this woman saved a lot on her grocery bills by finding coupons and using them with the in-store deals. the story said her best record was spending only 11 cents for a cart load of groceries during a grocery trip, but it neglected to mention where she went to for these coupons. I think hoping for that would be too much, but I’d like to try to cut my grocery bill at least in half. I know about the Safeway site, but was wondering if anyone else knew of more. I don’t want to sign up or register and be obligated to participate in promotional deals where I have to give out my home address and phone number in order to have access to these coupons.
Sorry, I’m not sure what to tag this post