I would say that me and Mrs. Ducky do but could probably do a lot more of it! Do you have any tips or pointers?
I would agree with excalibur16 that you have to be careful not to buy stuff just because a coupon for that thing exists.
Like MrsWolfeRN, I use the hip2save website/blog and usually just print the coupons I need, mainly from coupons.com or redplum.com or SmartSource.com. That being said, the hip2save website is littered with a lot of consumerist junk that you have to wade through. I also read the krogerkrazy website because it seems to be mildly more reasonable and is specific for Kroger stores.
In the Pacific Northwest, whospendsmoney is really helpful because he doesn't have quite as much junk and he does weekly matchups with little helpful comments on the side (like "cheap" or "free" in red next to an item that is well priced for the week) and has a link for a matching printable coupon under that item right there for you to click.
In response to Slow2FIRE's comment, I think you just might have to know where to look for coupons sometimes. The California dairy board put out a printable coupon on their website for 35 cents off any cheese that is marked "real California cheese." I have paired this coupon with a sale at Safeway when 8oz shredded cheese bags (store brand) are on sale for 99 cents (this happens maybe only twice a year). Makes it 64 cents per bag or $1.28/lb. I would buy 10 bags and throw them in the freezer to be used at a later time.
I think it's odd, but sometimes you can get the best deal on high end stuff. Currently there's a deal at Target where you can buy Woodstock Farms organic frozen vegetables for as little as 55 to 79 cents per bag if you print out the $1 off coupon and use Target's cartwheel app. Time to stock up. Bob's red mill flour was on sale before Christmas for $1.99 at our local store. Pair that with the printable coupon found on their website and it ended up being 20 cents per pound of high quality flour. Since we bake our own bread and make cookies a lot, I felt comfortable that we would be able to get through 8 bags before the expiration date. So that's how many I bought!
At this point, I know what a good deal is for certain meats, so I will always make a pass through the clearances meat section and pick up whatever is a great deal at 50% off. My grocery store also has a section for discounted slightly bruised fruits and veggies (often organic!). I will plan my meals around what I was able to buy for cheap that week. I fill in the gaps with whatever I have in the freezer. I have a healthy amount of frozen fish, meat, veggies, and fruit in my freezer.
I also don't use coupons for everything. Buying nuts, beans, dried fruit, and especially spices in bulk is REALLY a cheap option.
My husband and I are fortunate in that we have a small basement area where we can easily house our stockpile. That way when an awesome sale for toilet bowl cleaner or contact solution comes up, I will buy enough to last years (or at least until the expiration date).
Hope that is a helpful start.