There are ways to save for grocery to the point where you are getting so much for free, you would need to sell your stockpiles! If you know how to use your coupons the correct way, you will pay very little for food and household items.
First step is using coupons. I'm talking about clipping out all coupons that you think is going to be used.
Second step is doubling your coupons with manufacture coupons. You get manufacture coupons in the sunday papers. People usually buy about 4+ of these every Sunday when there are really good deals.
Third step is waiting for these items to go on sale. BUT how would I know when they go on sale? Is that what you're asking? I will provide links. These links will have coupons and manufacture coupons that you may use, but in order for it to be effective you need to also buy them when they are on sale. If not, just use them otherwise.
These forums are great. If you want to learn to really save hundreds a month. You need to read and learn. God Bless and He provides. Any questions please ask. When first starting out, it is overwhelming but it will get easier.