I did a money-saving series last April (hmmm, wonder what it is about this month of the year that makes me think so much about saving???) Rather than repeat what I wrote last year, I thought I'd start out by sharing the links to those particular posts instead...
Saving Money on Groceries by Menu Planning
Budgeting for Groceries
Paying With Cash
Establish a Price Comparison Book
Summing it Up: Some Final Tips to Saving on Groceries
I really do hope you take time to check these posts out. These are all things I have learned through trial-and-error as well as through reading many, many books on the topic of frugal living.
Have a blessed day!