The first thing you need to do when learning to shop to save is learn your local grocery stores coupon policies.

1) If an item rings up incorrectly, what do they do? At one local store (Kroger), if something rings up wrong you get it FREE!! Doesn't matter if it's diapers or a gallon of milk, if it's priced wrong, it's free. Some places do nothing, and there are policies everywhere in the middle.

2) Do they double or triple coupons, and what are their limits? Meijer in my area doubles coupons up to a .99 face value every day, with a limit of 2 of the same coupons. Example: Act 2 popcorn was recently on sale for $1 a box. I had .50 coupons, which they doubled to $1, so after a few trips, I amassed about 15 boxes of popcorn for free!

3) What are their sale cycles? Some places run their ads Sunday to Saturday, some Wednesday to Tuesday. Plan your shopping accordingly.

Hope this helps you!!!